the electric cow - wordpress.com › 2016 › 12 › the...livestock (a)omitted entirely from...
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![Page 1: The Electric Cow - WordPress.com › 2016 › 12 › the...Livestock (a)omitted entirely from official figures e.g. tropospheric ozone and black carbon (b)classified under non-livestock](https://reader033.vdocuments.us/reader033/viewer/2022042403/5f15d34de4731c257a32daaf/html5/thumbnails/1.jpg)
Paul Mahony, 26th May 2014
The Electric CowIf livestock’s emissions came from electricity, would most
environmentalists listen?
terrastendo.net©P
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If cows ran on electricity, how much would we use in
order to produce a beef steak?
The Electric Cow©
Paul M
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First, some background
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Key reasons for livestock’s impact
Scale
Inherent inefficiency
Greenhouse gases and other warming agents
Land clearing and degradation
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Key reasons for livestock’s impact
Scale
Inherent inefficiency
Greenhouse gases and other warming agents
Land clearing and degradation
Inter-related
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We’ll focus on the inefficiency of livestock as a
food source
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Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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What if we wanted to feed the same number of people
under each system?
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Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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More land
Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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More land
More fertiliser
Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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More land
More fertiliser
More energy
Inherent inefficiencies
The figures depicted have been provided in beef industry material.
Even a conversion factor of, say, 7 or 8 kg of grain per kg of end
product would represent a grossly inefficient system.
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Chicken meat is better, but . . . still a poor feed conversion ratio
Inherent inefficiencies©
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1.7
Inherent inefficiencies©
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1.7
Yield (meat from live weight) 72.25% = 2.35 kg feed per kg meatInherent inefficiencies
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Yield (meat from live weight) 72.25% = 2.35 kg feed per kg meat
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1.7
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Yield (meat from live weight) 72.25% = 2.35 kg feed per kg meat
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Yield (meat from live weight) 72.25%
= 2.35 kg feed per kg meat
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Yield (meat from live weight) 72.25%
= 2.35 kg feed per kg meat
= a return of 43% (or nutrition loss of 57%)
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Yield (meat from live weight) 72.25%
= 2.35 kg feed per kg meat
Any management team
promoting this level of
efficiency for a conventional
business would be shown the
door!
= a return of 43% (or nutrition loss of 57%)
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Livestock
Certain livestock-related emissions figures are effectively
omitted from official figures in Australia and elsewhere
because relevant factors are:
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Livestock
(a) omitted entirely from official figures
e.g. tropospheric ozone and black carbon
Certain livestock-related emissions figures are effectively
omitted from official figures in Australia and elsewhere
because relevant factors are:
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Livestock
(a) omitted entirely from official figures
e.g. tropospheric ozone and black carbon
(b) classified under non-livestock headings
e.g. livestock-related land clearing reported under
“land use, land use change and forestry”
Certain livestock-related emissions figures are effectively
omitted from official figures in Australia and elsewhere
because relevant factors are:
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Livestock
(a) omitted entirely from official figures
e.g. tropospheric ozone and black carbon
(b) classified under non-livestock headings
e.g. livestock-related land clearing reported under
“land use, land use change and forestry”
(c) considered but with conservative calculations
e.g. methane’s impact based on a 100-year, rather
than 20-year, “global warming potential”
Certain livestock-related emissions figures are effectively
omitted from official figures in Australia and elsewhere
because relevant factors are:
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Back to the electric cow©
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If cows ran on electricity, how much would we use in
order to produce a beef steak?
Back to the electric cow©
Paul M
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Specifically, what figure would we arrive at if it was based
on their current level of greenhouse gas emissions?
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To get some idea, we’ll compare their emissions
performance to:
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• Australian aluminium smelting, which
consumes vast amounts of electricity
• Australian electricity generation, which comes
largely from coal
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Firstly, aluminium©
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“Aluminium is the ultimate proxy
for energy”
Marius Kloppers, former CEO of
BHP Billiton
“To phrase it in terms of the
industry joke, aluminium is
congealed electricity.”
Mining Weekly.com
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Aluminium smelting has at times consumed 16%
of Australia’s electricity
. . . for less than 1% of gross domestic product
. . . and less than 0.1% of jobs.
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That percentage may have reduced due to smelter
closures and a reduction in emissions intensity from
20 tonnes of greenhouse gas per tonne of product in
1999 to 15.6 tonnes in 2011, but its contribution is
still extremely significant.
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The emissions intensity of Australian aluminium
smelting has been 2.5 times the global average, as
the electricity is primarily coal-fired, including brown
coal from the Latrobe Valley in Victoria.
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The emissions intensity of Australian aluminium
smelting has been 2.5 times the global average, as
the electricity is primarily coal-fired, including brown
coal from the Latrobe Valley in Victoria.
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Emissions intensity represents the unit weight of
CO2-equivalent greenhouse gases per unit weight of
end product for any given commodity.
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Let’s compare the emissions intensity of
aluminium smelting to that of various plant-based
food products, i.e.:
- sugar,
- wheat,
- other grains,
- carrots,
- potatoes,
- apples and
- soy beans.
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0.2 0.4 0.4 0.4 0.50.8 0.9
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Plant-based foods from sugar to soybeans
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Here are emissions intensity figures for various
plant-based food sources
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0.2 0.4 0.4 0.4 0.50.8 0.9
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Plant-based foods from sugar to soybeans
Let’s then see how steel production and
aluminium smelting compare
(rounded up to zero decimal places).
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0.2 0.4 0.4 0.4 0.50.8 0.9
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Plant-based foods from sugar to soybeans
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0.2 0.4 0.4 0.4 0.50.8 0.9
3
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Plant-based foods from sugar to soybeans Steel
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0.2 0.4 0.4 0.4 0.50.8 0.9
3
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Steel & AluminiumPlant-based foods from sugar to soybeans
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0.2 0.4 0.4 0.4 0.50.8 0.9
3
16
0
2
4
6
8
10
12
14
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kg
CO
2-e
/ k
g p
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uc
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Steel & AluminiumPlant-based foods from sugar to soybeans
We’ll now consider beef production, but first we
need to change the scale of the chart.
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0.2 0.4 0.4 0.4 0.50.8 0.9
3
16
0
2
4
6
8
10
12
14
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18
kg
CO
2-e
/ k
g p
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Steel & AluminiumPlant-based foods from sugar to soybeans
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium
©P
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48
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Grass-fedbeef
Mixed-grazing
beef
©P
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49
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Grass-fedbeef
Mixed-grazing
beef
The first figures are global average figures based on
carcass weight, published by the Food & Agriculture
Organization of the United Nations in Dec, 2013.
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Grass-fedbeef
Mixed-grazing
beef
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
56
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
56
102
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
56
102
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
Now let’s consider emissions intensity based on the weight
of the retail product (representing the yield), rather than
the weight of the carcass.
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
56
102
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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The emissions relating to the cow haven’t changed, but the “end
product”, retail meat obtained from the carcass, is lighter than
the carcass itself, so the emissions intensity increases.
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
56
102
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
102
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
102
140
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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58
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
102
140
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
Now let’s adjust for a 20-year “global warming
potential” (GWP) for methane, but first an
explanation.
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59
The emissions of different gases can be aggregated by
converting them to carbon dioxide equivalents (CO2-e). It
is like a common denomination for greenhouse gases.
©P
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They are converted by multiplying the mass of emissions
by the appropriate global warming potentials (GWPs).
GWPs represent the relative warming effect of a unit
mass of the gas when compared with the same mass of
CO2 over a specific period.
![Page 60: The Electric Cow - WordPress.com › 2016 › 12 › the...Livestock (a)omitted entirely from official figures e.g. tropospheric ozone and black carbon (b)classified under non-livestock](https://reader033.vdocuments.us/reader033/viewer/2022042403/5f15d34de4731c257a32daaf/html5/thumbnails/60.jpg)
60
CO2-e equivalent (CO2-e) emissions from livestock
20-year “Global Warming Potential” (GWP)
Traditional reporting of
methane’s global warming
potential has understated its
shorter-term impact, as it
breaks down in the
atmosphere much faster
than carbon dioxide.
The IPCC’s 100-year GWP
for methane was increased
to 34 (with carbon cycle
feedbacks) in 2013.
The figure for a 20 year
timeframe is 86.
NASA reports figures of 33
for 100 years and 105 for 20
years.
©P
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61
CO2-e equivalent (CO2-e) emissions from livestock
20-year “Global Warming Potential” (GWP)
Methane’s shorter-term
impacts can become long-
term to the extent that they
contribute to us reaching
climate change tipping points
with catastrophic and
irreversible consequences.
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62
CO2-e equivalent (CO2-e) emissions from livestock
20-year “Global Warming Potential” (GWP)
Methane’s shorter-term
impacts can become long-
term to the extent that they
contribute to us reaching
climate change tipping points
with catastrophic and
irreversible consequences.
©P
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Meaningful action in regard
to key sources of methane
can represent a significant
mitigation measure with a
relatively fast response time.
![Page 63: The Electric Cow - WordPress.com › 2016 › 12 › the...Livestock (a)omitted entirely from official figures e.g. tropospheric ozone and black carbon (b)classified under non-livestock](https://reader033.vdocuments.us/reader033/viewer/2022042403/5f15d34de4731c257a32daaf/html5/thumbnails/63.jpg)
63
CO2-e equivalent (CO2-e) emissions from livestock
20-year “Global Warming Potential” (GWP)
Methane’s shorter-term
impacts can become long-
term to the extent that they
contribute to us reaching
climate change tipping points
with catastrophic and
irreversible consequences.
©P
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Meaningful action in regard
to key sources of methane
can represent a significant
mitigation measure with a
relatively fast response time.
To repeat: Methane’s shorter-te
rm impacts can become long-term
to the extent that th
ey contribute to us reaching climate change
tipping points with catastrophic and irreversible consequences.
![Page 64: The Electric Cow - WordPress.com › 2016 › 12 › the...Livestock (a)omitted entirely from official figures e.g. tropospheric ozone and black carbon (b)classified under non-livestock](https://reader033.vdocuments.us/reader033/viewer/2022042403/5f15d34de4731c257a32daaf/html5/thumbnails/64.jpg)
64
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
102
140
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
So now we’ll insert figures based on a 20-year GWP©
Paul M
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65
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
102
140
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
aul M
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66
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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67
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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ahon
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68
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
©P
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69
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
On that basis, the global average emissions
intensity of beef from grass-fed cows is more than
18 times that of Australian aluminium smelting.
©P
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
As mentioned, Australian aluminium smelting has
been 2.5 times as emissions intensive as the
global average.
©P
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71
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
The “20-year GWP” figures are based on the global average
percentage split of the various factors contributing to beef’s emissions
intensity.
©P
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72
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
As methane’s percentage contribution would be lower in mixed
systems than in grazing systems, they may be over-stated for the
former (160 kg) and under-stated for the latter (291 kg).
They are intended to be approximations only.
©P
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73
0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
5677
160
102
140
291
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium Mixed-grazing
beef
Grass-fedbeef
The figures also vary by region.
As stated, those shown here are the global average.
©P
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74
Here’s how meat from small ruminants (primarily
sheep & goats) compares
©P
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75
Here’s how meat from small ruminants (primarily
sheep & goats) compares
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
3
16
0
10
20
30
40
50
60
70
80
90
100
kg
CO
2-e
/ k
g p
rod
uct
Steel Aluminium Sheep - Mixed - Carcass
Sheep - Mixed - Retail Sheep Mixed Retail - 20 Yr GWP Sheep - Grazing - Carcass
Sheep - Grazing - Retail Sheep Grazing Retail - 20 Yr GWP
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
©P
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76
Here’s how meat from small ruminants (primarily
sheep & goats) compares
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
3
23 24
16
0
10
20
30
40
50
60
70
80
90
100
kg
CO
2-e
/ k
g p
rod
uct
Steel Aluminium Sheep - Mixed - Carcass
Sheep - Mixed - Retail Sheep Mixed Retail - 20 Yr GWP Sheep - Grazing - Carcass
Sheep - Grazing - Retail Sheep Grazing Retail - 20 Yr GWP
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
©P
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77
Here’s how meat from small ruminants (primarily
sheep & goats) compares
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
3
23
35
24
16
36
0
10
20
30
40
50
60
70
80
90
100
kg
CO
2-e
/ k
g p
rod
uct
Steel Aluminium Sheep - Mixed - Carcass
Sheep - Mixed - Retail Sheep Mixed Retail - 20 Yr GWP Sheep - Grazing - Carcass
Sheep - Grazing - Retail Sheep Grazing Retail - 20 Yr GWP
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
©P
aul M
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78
Here’s how meat from small ruminants (primarily
sheep & goats) compares
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
3
23
35
24
86
16
84
36
0
10
20
30
40
50
60
70
80
90
100
kg
CO
2-e
/ k
g p
rod
uct
Steel Aluminium Sheep - Mixed - Carcass
Sheep - Mixed - Retail Sheep Mixed Retail - 20 Yr GWP Sheep - Grazing - Carcass
Sheep - Grazing - Retail Sheep Grazing Retail - 20 Yr GWP
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
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Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
3
23
35
24
86
16
84
36
0
10
20
30
40
50
60
70
80
90
100
kg
CO
2-e
/ k
g p
rod
uct
Steel Aluminium Sheep - Mixed - Carcass
Sheep - Mixed - Retail Sheep Mixed Retail - 20 Yr GWP Sheep - Grazing - Carcass
Sheep - Grazing - Retail Sheep Grazing Retail - 20 Yr GWP
Steel & Aluminium
Sheep from grazing systems
Sheep from mixed systems
Some of the emissions from small ruminants are
attributed to milk and fibre, reducing the meat figure
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80
Let’s see how the global emissions intensity of chicken and
pig meat compares, based on retail weight and a 20-year
GWP.
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SOME FURTHER COMPARISONS
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SOME FURTHER COMPARISONS
Let’s see how the global emissions intensity of chicken and
pig meat compares, based on retail weight and a 20-year
GWP.
Firstly, we’ll revert to the original scale on the chart.
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium
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0.2 0.4 0.4 0.4 0.5 0.8 0.9 316
0
50
100
150
200
250
300
350
kg
CO
2-e
/ k
g p
rod
uct
Plant-based foods, steel & aluminium
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Emissions Intensity
0.2 0.4 0.4 0.4 0.50.8 0.9
3
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Steel & AluminiumPlant-based foods from sugar to soybeans
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0.2 0.4 0.4 0.4 0.50.8 0.9
3
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Steel & AluminiumPlant-based foods from sugar to soybeans
©P
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To make some room, we’ll remove soy beans and steel
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0.2 0.4 0.4 0.4 0.50.8 0.9
3
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
t
Steel & AluminiumPlant-based foods from sugar to soybeans
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0.2 0.4 0.4 0.4 0.50.8
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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AluminiumPlant-based foods from sugar to apples
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0.2 0.4 0.4 0.4 0.50.8
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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AluminiumPlant-based foods from sugar to apples
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Now we’ll add pig and chicken meat.
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0.2 0.4 0.4 0.4 0.50.8
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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AluminiumPlant-based foods from sugar to apples
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0.2 0.4 0.4 0.4 0.50.8
7.6
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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AluminiumPlant-based foods from sugar to apples Chicken
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0.2 0.4 0.4 0.4 0.50.8
7.6
13.6
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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Pig AluminiumPlant-based foods from sugar to apples Chicken
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0.2 0.4 0.4 0.4 0.50.8
7.6
13.6
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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Pig AluminiumPlant-based foods from sugar to apples Chicken
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0.2 0.4 0.4 0.4 0.50.8
7.6
13.6
16
0
2
4
6
8
10
12
14
16
18
kg
CO
2-e
/ k
g p
rod
uc
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Pig AluminiumPlant-based foods from sugar to apples Chicken
The emissions intensity of chicken and pig meat is very
poor relative to plant-based alternatives.
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94
The emissions intensity of Australian beef
production is lower than the global average due
primarily to higher productivity (more meat per
cow), relatively high feed digestibility and a
reduction in livestock-related land clearing since
the end of 2006.
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95
The land clearing may increase following the
recent overturning by the current Queensland
government of a ban imposed by the previous
government on broad scale land clearing.
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The land clearing may increase following the
recent overturning by the current Queensland
government of a ban imposed by the previous
government on broad scale land clearing.
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97
The UNFAO has not produced emissions intensity
figures for specialised beef in Australia.
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The UNFAO has not produced emissions intensity
figures for specialised beef in Australia.
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For our next comparison, we’ll consider figures
produced by Australia’s Department of the
Environment.
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99
The UNFAO has not produced emissions intensity
figures for specialised beef in Australia.
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For our next comparison, we’ll consider figures
produced by Australia’s Department of the
Environment.
Let’s see how the aggregate emissions of cows
and other livestock animals compare to those of
Australian electricity generation, taking into
account only methane emissions in respect of the
animals.
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Background: Around 90 per cent of Australia’s electricity
is generated from traditional fossil fuels, with 69 per cent
from coal and 19 per cent from natural gas.
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a includes wind, hydro, solar PV and bioenergy; b includes multi-fuel power plants
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In terms of gross domestic product, Australia’s economy
was ranked number 12 of 214 nations by The World Bank
as at 8th May, 2014.
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a includes wind, hydro, solar PV and bioenergy; b includes multi-fuel power plants
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Australia’s per capita emissions are amongst the highest
in the world.
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a includes wind, hydro, solar PV and bioenergy; b includes multi-fuel power plants
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Around 90 percent of Australia’s emissions from fossil fuel
electricity generation come from black and brown coal.
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Electricity emissions: Australian Government, Dept of the Environment, “National Inventory Report 2012 Volume 1”, Fig. 3.2
CO2-e emissions from electricity generation by fossil fuels, 1990-92, p. 50.
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104
CO2-e emissions (Gg) 2012: Coal-fired electricity
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215,725175,000
0
50,000
100,000
150,000
200,000
250,000
Coal-fired electricity
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105
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215,725175,000
0
50,000
100,000
150,000
200,000
250,000
Coal-fired electricity Methane from animalagriculture
CO2-e emissions (Gg) 2012: Coal-fired electricity
and methane from animal agriculture based on 20-year GWP
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106
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215,725193,000
0
50,000
100,000
150,000
200,000
250,000
Total electricity
CO2-e emissions (Gg) 2012: All electricity generation
and methane from animal agriculture based on 20-year GWP
Methane from animalagriculture
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107
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215,725193,000
On this basis, if the newly developed electric cows, sheep,
chickens, pigs and other livestock animals were to require
the amount of electricity that would create their current
level of greenhouse gas emissions, then we would not be
generating enough for them to operate, even if all other
activities using electricity ceased!
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108
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215,725193,000
The reported methane emissions are from: enteric
fermentation (released primarily through belching); manure
management; and savanna burning.
There appears to be no allowance in Australia’s livestock-
related greenhouse gas inventory for the following non-
methane factors that are considered by the FAO: manure
applied to feed crops (N2O); Fertilizer and crop residues
(N2O); feed (CO2); and land use change (pasture expansion)
(CO2).
Australia’s greenhouse gas inventory does include N20
emissions from manure management and savanna burning.
Notes:
- CO2 = carbon dioxide; CH4 = methane; N2O = nitrous oxide
- The UN FAO treats “manure management” and “applied and deposited manure” as separate
categories. It appears the Australian figures included “deposited manure” in “manure management”.
- We have applied 57% of savanna burning to livestock production, in line with material
commissioned by the former Australian Greenhouse Office.
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109
Methane’s share of beef’s global average emissions is 44%(Enteric fermentation 42.6% and manure management 1.4%)
Enteric 42.6%
Manure (3 categories) 23.1%
Feed & fertiliser 17.4%
LUC – Pasture 14.8%
Energy 0.9%
LUC – Soybean 0.7%
Postfarm 0.5%
Total 100%
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110
Buying locally hardly helps
Postfarm
emissions
(transport and
processing) only
account for 0.5%
of the total.
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Enteric 42.6%
Manure (3 categories) 23.1%
Feed & fertiliser 17.4%
LUC – Pasture 14.8%
Energy 0.9%
LUC – Soybean 0.7%
Postfarm 0.5%
Total 100%
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James Hansen – Essential Measures©
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James Hansen – Essential Measures©
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Massive reforestation and action on soil carbon will be critical
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Chicken 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Beef mixed 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Beef grass fed 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Fish 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Tofu 100g
Soy Nuts 50g
Kidney Beans 50g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Soymilk 400g
Alternative Diets (updated October 2014)
Plant foods’ emissions for this and subsequent slides are from an Oxford study released in June, 2014. Some
are slightly higher than figures used in earlier slides but still significantly below the animal-based figures.
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Chicken 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Beef mixed 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Beef grass fed 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Fish 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Tofu 100g
Soy Nuts 50g
Kidney Beans 50g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Soymilk 400g
Alternative Diets (updated October 2014)
Plant foods’ emissions for this and subsequent slides are from an Oxford study released in June, 2014. Some
are slightly higher than figures used in earlier slides but still significantly below the animal-based figures.
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Emissions:
2.00 kg
Chicken 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Beef mixed 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Beef grass fed 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Fish 200g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Cow’s milk 400g
Emissions:
3.24 kg
Emissions:
3.68 kg
Emissions:
34.17 kg
Emissions:
60.34 kg
Tofu 100g
Soy Nuts 50g
Kidney Beans 50g
Broccoli 50g
Carrot 50g
Potato 150g
Almonds 50g
Banana 150g
Orange 150g
Oats 80g
Quinoa 100g
Spinach 100g
Dried Apricots 65g
Avocado 50g
W'meal Bread 130g
Soymilk 400g
Alternative Diets (updated October 2014)
Plant foods’ emissions for this and subsequent slides are from an Oxford study released in June, 2014. Some
are slightly higher than figures used in earlier slides but still significantly below the animal-based figures.
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Alternative Diets (updated October 2014)Greenhouse gas emissions (kg per day)
Key distinguishing ingredients shown
Plant foods’ emissions for this and subsequent slides are from an Oxford study released in June, 2014. Some
are slightly higher than figures used in earlier slides but still significantly below the animal-based figures.
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What about chickens and fish?
While emissions from diets featuring chicken and
fish are comparable to the plant-based alternative,
those two commodities in their own right are
around three to four times as emissions intensive.
Fish photo© Furzyk73 | Dreamstime.com - Tinca Tinca, Doctor Fish, The Tench Photo; Chicken photo courtesy of aussiechickens.com.au
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What about chickens and fish?
They also involve other massive environmental
problems, including destruction of oceanic
ecosystems and waste from around 60 billion
chickens bred and slaughtered annually.
Fish photo© Furzyk73 | Dreamstime.com - Tinca Tinca, Doctor Fish, The Tench Photo; Chicken photo courtesy of aussiechickens.com.au
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119
Dr Andrew Glikson, earth and paleoclimate scientist at Australian National
University
Some thoughts to conclude©
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“Contrarian claims by sceptics,
misrepresenting direct observations in
nature and ignoring the laws of physics,
have been adopted by neo-conservative
political parties.”
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Dr Andrew Glikson, earth and paleoclimate scientist at Australian National
University
Some thoughts to conclude
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121
“A corporate media maintains a
‘balance’ between facts and fiction.”
“Contrarian claims by sceptics,
misrepresenting direct observations in
nature and ignoring the laws of physics,
have been adopted by neo-conservative
political parties.”
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Dr Andrew Glikson, earth and paleoclimate scientist at Australian National
University
Some thoughts to conclude
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122
“The best that governments seem to do
is devise cosmetic solutions, or promise
further discussions, while time is
running out.”
“A corporate media maintains a
‘balance’ between facts and fiction.”
“Contrarian claims by sceptics,
misrepresenting direct observations in
nature and ignoring the laws of physics,
have been adopted by neo-conservative
political parties.”
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Dr Andrew Glikson, earth and paleoclimate scientist at Australian National
University
Some thoughts to conclude
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123
“The best that governments seem to do
is devise cosmetic solutions, or promise
further discussions, while time is
running out.”
“A corporate media maintains a
‘balance’ between facts and fiction.”
“Contrarian claims by sceptics,
misrepresenting direct observations in
nature and ignoring the laws of physics,
have been adopted by neo-conservative
political parties.”
“GOOD PLANETS ARE HARD TO COME BY!”
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Dr Andrew Glikson, earth and paleoclimate scientist at Australian National
University
Some thoughts to conclude
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124
“The best that governments seem to do
is devise cosmetic solutions, or promise
further discussions, while time is
running out.”
“A corporate media maintains a
‘balance’ between facts and fiction.”
“Contrarian claims by sceptics,
misrepresenting direct observations in
nature and ignoring the laws of physics,
have been adopted by neo-conservative
political parties.”
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Dr Andrew Glikson, earth and paleoclimate scientist at Australian National
University
Some thoughts to conclude
References and supplementary slides follow
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ReferencesMethane GWP Chart: Smith, K., cited in World Preservation Foundation, “Reducing Shorter-Lived Climate Forcers through Dietary Change: Our best chance
for preserving global food security and protecting nations vulnerable to climate change“,
http://www.worldpreservationfoundation.org/Downloads/ReducingShorterLivedClimateForcersThroughDietaryChange.pdf
Shindell, D.T., Faluvegi, G., Koch, D.M., Schmidt, G.A., Unger, N., Bauer, S.E., “Improved Attribution of Climate Forcing to Emissions“, Science 30 October
2009: Vol. 326 no. 5953 pp. 716-718 DOI: 10.1126/science.1174760, https://www.sciencemag.org/content/326/5953/716.figures-only
Sanderson, K., “Aerosols make methane more potent”, Nature, Published online 29 October 2009 | Nature | doi:10.1038/news.2009.1049,
http://www.nature.com/news/2009/091029/full/news.2009.1049.html
Intergovernmental Panel on Climate Change, Fifth Assessment Report, 2014, http://www.ipcc.ch/report/ar5/, cited in Romm, J., “More Bad News For
Fracking: IPCC Warns Methane Traps More Heat”, The Energy Collective, 7th October, 2013, http://theenergycollective.com/josephromm/284336/more-bad-
news-fracking-ipcc-warns-methane-traps-much-more-heat-we-thoughtSanderson, K., “Aerosols make methane more potent”, Nature, Published online 29
October 2009 | Nature | doi:10.1038/news.2009.1049, http://www.nature.com/news/2009/091029/full/news.2009.1049.html
Food and Agriculture Organization of the United Nations, “Tackling climate change through livestock: A global assessment of emissions and mitigation
opportunities”, Nov 2013, http://www.fao.org/ag/againfo/resources/en/publications/tackling_climate_change/index.htm;
http://www.fao.org/docrep/018/i3437e/i3437e.pdf
Food and Agriculture Organization of the United Nations, “Greenhouse gas emissions from ruminant supply chains: A global life cycle assessment”, Nov
2013, http://www.fao.org/ag/againfo/resources/en/publications/tackling_climate_change/index.htm; http://www.fao.org/docrep/018/i3461e/i3461e.pdf
United States Department of Agriculture Economic Research Service, Agricultural Handbook No. 697, June, 1992 (website updated 10 September, 2013),
“Weights, Measures, and Conversion Factors for Agricultural Commodities and Their Products”, http://www.ers.usda.gov/publications/ah-agricultural-
handbook/ah697.aspx#.U0ihR6Ikykw
Hamilton, C, “Scorcher: The Dirty Politics of Climate Change”, (2007) Black Inc Agenda, p. 40
Australian Aluminium Council Ltd, “Climate Change: Aluminium Smelting Greenhouse Performance”, http://aluminium.org.au/climate-change/smelting-
greenhouse-performance (Accessed 14th April, 2014)
Turton, H. “Greenhouse gas emissions in industrialised countries Where does Australiastand?”, The Australia Institute, Discussion Paper Number 66, June
2004, ISSN 1322-5421, p. viii, https://www.tai.org.au/documents/dp_fulltext/DP66.pdf
Carlsson-Kanyama, A. & Gonzalez, A.D. “Potential Contributions of Food Consumption Patterns to Climate Change”, The American Journal of Clinical
Nutrition, Vol. 89, No. 5, pp. 1704S-1709S, May 2009, http://www.ajcn.org/cgi/content/abstract/89/5/1704S
George Wilkenfeld & Associates Pty Ltd and Energy Strategies, “National Greenhouse Gas Inventory 1990, 1995, 1999, End Use Allocation of Emissions
Report to the Australian Greenhouse Office, 2003, Volume 1”, Table S5, p. vii
Glikson, A., “As emissions rise, we may be heading for an ice-free planet”, The Conversation, 18 January, 2012,
http://theconversation.edu.au/as-emissions-rise-we-may-be-heading-for-an-ice-free-planet-4893 (Accessed 4 February 2012)
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ReferencesAustralian Government Department of Industry, “The Australian Aluminium Industry”,
http://www.innovation.gov.au/INDUSTRY/AUSTRALIANALUMINIUMINDUSTRY/Pages/default.aspx (accessed 18th April, 2014) (Industry output 2010/11
1,938,000 tonnes)
Australian Government Department of Agriculture, Fisheries and Forestry, “Australian food statistics 2011–12”, Table 2.4 Supply and Use of Australian
Meats, p. 58, http://www.daff.gov.au/__data/assets/pdf_file/0007/2269762/daff-foodstats-2011-12.pdf (Beef and veal production 2010/11 2,133,000 tonnes)
Australian Government, Bureau of Resources and Energy Economics, “2013 Australian Energy Update”, Fig. 3 Australian electricity generation, by fuel type,
p. 10, http://www.bree.gov.au/sites/default/files/files//publications/aes/2013-australian-energy-statistics.pdf
Electricity emissions: Australian Government, Dept of the Environment, “National Inventory Report 2012 Volume 1”, Fig. 3.2 CO2-e emissions from electricity
generation by fossil fuels, 1990-2012, p. 50.
Campbell, K., "Energy crunch constraining aluminium expansions”, 27 February, 2006, www.miningweekly.com, http://www.miningweekly.com/article/energy-
crunch-constraining-aluminum-expansions-2006-02-27
The World Bank, GDP Ranking, 8th May, 2014, http://data.worldbank.org/data-catalog/GDP-ranking-table
Pie chart: Figure 7, p. 24, Food and Agriculture Organization of the United Nations, “Tackling climate change through livestock: A global assessment of
emissions and mitigation opportunities”, Nov 2013, http://www.fao.org/ag/againfo/resources/en/publications/tackling_climate_change/index.htm;
http://www.fao.org/docrep/018/i3437e/i3437e.pdf
Beef’s efficiency diagram derived from W.O. Herring and J.K. Bertrand, “Multi-trait Prediction of Feed Conversion in Feedlot Cattle”, Proceedings from the
34th Annual Beef Improvement Federation Annual Meeting, Omaha, NE, July 10-13, 2002,
www.bifconference.com/bif2002/BIFsymposium_pdfs/Herring_02BIF.pdf, cited in Singer, P & Mason, J, “The Ethics of What We Eat” (2006), Text Publishing
Company, p. 210
Chicken’s feed conversion figures: Australian Chicken Meat Federation, Industry facts and figures, http://www.chicken.org.au/page.php?id=4 (accessed 7th
May, 2014).
Chicken yield figure: USDA Agricultural Handbook # 697 “Weights, Measures and Conversion Factors for Agricultural Commodities and Their Products”,
June 1992, http://www.ers.usda.gov/publications/ah-agricultural-handbook/ah697.aspx, updated 10 Sep, 2013
Hansen, J; Sato, M; Kharecha, P; Beerling, D; Berner, R; Masson-Delmotte, V; Pagani, M; Raymo, M; Royer, D.L.; and Zachos, J.C. “Target Atmospheric
CO2: Where Should Humanity Aim?”, 2008.
Acknowledgement: An earlier comparison between electricity generation and methane emissions was reported by Prof. Barry Brook and Geoff Russell in
“Meat’s Carbon Hoofprint”, Australasian Science, Nov/Dec 2007, pp. 37-39, http://www.control.com.au/bi2007/2810Brook.pdf
Australian Government, Bureau of Resources and Energy Economics, “2013 Australian Energy Update”, Fig. 3 Australian electricity generation, by fuel type,
p. 10, http://www.bree.gov.au/sites/default/files/files//publications/aes/2013-australian-energy-statistics.pdf
Electricity emissions: Australian Government, Dept of the Environment, “National Inventory Report 2012 Volume 1”, Fig. 3.2 CO2-e emissions from electricity
generation by fossil fuels, 1990-92, p. 50.
Scarborough, P., Appleby, P.N., Mizdrak, A., Briggs, A.D.M., Travis, R.C., Bradbury, K.E., & Key, T.J., "Dietary greenhouse gas emissions of meat-eaters,
fish-eaters, vegetarians and vegans in the UK", Climatic Change, DOI 10.1007/s10584-014-1169-1
Cover images: Plug © Antonio Mirabile | Dreamstime.com; Cow © Pavelmidi1968 | Dreamstime.com
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Supplementary slides
Land clearing
Nutrition
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128
Land Clearing in Australia
Total area cleared since European settlement approx. 1 million sq. km.
Approx. 70% or 700,000 sq km (9% of Australia’s land area) is due to livestock.
Cleared native vegetation and protected areas
Cleared native vegetation
Native vegetation
Protected areas
Sources: Map - National Biodiversity Strategy Review Task Group, “Australia’s
Biodiversity Conservation Strategy 2010–2020”, Figure A10.1, p. 91Other figures derived from Russell, G. “The global food system and climate
change – Part 1”, 9 Oct 2008, www.bravenewclimate.com, which utilised:
Dept. of Sustainability, Environment, Water, Population and Communities,
State of the Environment Report 2006, Indicator: LD-01 The proportion and
area of native vegetation and changes over time, March 2009; and
ABS, 4613.0 “Australia’s Environment: Issues and Trends”, Jan 2010; andABS 1301.0 Australian Year Book 2008, since updated for 2009-10, 16.13 Area of crops
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129
Land clearing in Australia
Original Map: Copyright 2010 Melway Publishing Pty Ltd. Reproduced from Melway Edition 38 with permission.
10 km
If we assumed that the land north of a 10 km line running east from the middle of
Melbourne was covered by forest and other wooded vegetation.
How far north would we go to clear as much land as was cleared in Queensland
between 1988 and 2008?
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130
Original Map: Copyright 2010 Melway Publishing Pty Ltd. Reproduced from Melway Edition 38 with permission.
10 km
Land clearing in Australia©
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131
Land clearing in Australia – Queensland 1988 -2008Approximately 78,000 square kilometres
Source:
Derived from Bisshop, G. & Pavlidis, L, “Deforestation and land
degradation in Queensland - The culprit”, Article 5, 16th Biennial Australian
Association for Environmental Education Conference, Australian National
University, Canberra,
26-30 September 2010
Original map: www.street-directory.com.au. Used with permission.
(Cairns inserted by this presenter.)
Cairns
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132
Land clearing in Australia – Queensland 1988 -2008Approximately 78,000 square kilometres
Source:
Derived from Bisshop, G. & Pavlidis, L, “Deforestation and land
degradation in Queensland - The culprit”, Article 5, 16th Biennial Australian
Association for Environmental Education Conference, Australian National
University, Canberra,
26-30 September 2010
Original map: www.street-directory.com.au. Used with permission.
(Cairns inserted by this presenter.)
Cairns
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133
Land clearing in Australia – Queensland 1988 -2008Approximately 78,000 square kilometres
Source:
Derived from Bisshop, G. & Pavlidis, L, “Deforestation and land
degradation in Queensland - The culprit”, Article 5, 16th Biennial Australian
Association for Environmental Education Conference, Australian National
University, Canberra,
26-30 September 2010
Original map: www.street-directory.com.au. Used with permission.
(Cairns inserted by this presenter.)
Cairns
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134
Land clearing in Australia – Queensland 1988 -2008Approximately 78,000 square kilometres
Source:
Derived from Bisshop, G. & Pavlidis, L, “Deforestation and land
degradation in Queensland - The culprit”, Article 5, 16th Biennial Australian
Association for Environmental Education Conference, Australian National
University, Canberra,
26-30 September 2010
Original map: www.street-directory.com.au. Used with permission.
(Cairns inserted by this presenter.)
Cairns
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135
Land clearing in Australia – Queensland 1988 -2008Approximately 78,000 square kilometres
Source:
Derived from Bisshop, G. & Pavlidis, L, “Deforestation and land
degradation in Queensland - The culprit”, Article 5, 16th Biennial Australian
Association for Environmental Education Conference, Australian National
University, Canberra,
26-30 September 2010
Original map: www.street-directory.com.au. Used with permission.
(Cairns inserted by this presenter.)
Cairns
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136
Land clearing in Australia – Queensland 1988 -2008Approximately 78,000 square kilometres
Source:
Derived from Bisshop, G. & Pavlidis, L, “Deforestation and land
degradation in Queensland - The culprit”, Article 5, 16th Biennial Australian
Association for Environmental Education Conference, Australian National
University, Canberra,
26-30 September 2010
Original map: www.street-directory.com.au. Used with permission.
(Cairns inserted by this presenter.)
Cairns
78,000 sq km
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137Sources: Mahesh Sankaran, et al, “Determinants of woody cover in African savannas”, Nature 438, 846-849 (8 December
2005), cited in Russell, G. “Burning the biosphere, boverty blues (Part 2)”, www.bravenewclimate.com
Rainforest destruction in Africa
The vertical lines primarily represent the Guinea Savanna, which was once forest and is maintained as savanna through regular burning, primarily to enable cattle grazing.
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138Sources: Mahesh Sankaran, et al, “Determinants of woody cover in African savannas”, Nature 438, 846-849 (8 December
2005), cited in Russell, G. “Burning the biosphere, boverty blues (Part 2)”, www.bravenewclimate.com
MODIS Rapid Response Team, NASA Goddard Space Flight Center, http://rapidfire.sci.gsfc.nasa.gov/firemaps/
Rainforest destruction in Africa©
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139Sources: Mahesh Sankaran, et al, “Determinants of woody cover in African savannas”, Nature 438, 846-849 (8 December
2005), cited in Russell, G. “Burning the biosphere, boverty blues (Part 2)”, www.bravenewclimate.com
MODIS Rapid Response Team, NASA Goddard Space Flight Center, http://rapidfire.sci.gsfc.nasa.gov/firemaps/
Rainforest destruction in Africa©
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140
Rainforest destruction in South America
Black carbon information: Presentation by Gerard Bisshop, World Preservation Fund presentation to Cancun Climate
Summit, Dec, 2010 “Shorter lived climate forcers: Agriculture Sector and Land Clearing for Livestock” (co-authors Lefkothea Pavlidis and Dr Hsien Hui Khoo). MODIS Rapid Response Team, NASA Goddard Space Flight Center -http://rapidfire.sci.gsfc.nasa.gov/firemaps/
Winds transport black carbon from the Amazon to the Antarctic
Peninsula.
47% to 61% of black carbon in Antarctica comes from pasture
management in the Amazon and
Africa.
Black carbon melts ice rapidly by
absorbing heat from sunlight.
http://rainforests.mongabay.com/amazon/amazon_map.html
http://www.world-maps.co.uk/continent-map-of-south-america.htm
MODIS Rapid Response Team, NASA Goddard Space Flight
Center - http://rapidfire.sci.gsfc.nasa.gov/firemaps/
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141Source: Modis fire map, NASA
Burning in Australia
To put Australian savanna burning into context, the 2009 Black Saturday bushfires in the state of Victoria burnt around 4,500 hectares. In comparison, each year in northern Australia where 70% of our cattle graze, we burn 100 times that area across the tropical savanna.
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Protein©
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Bull elephant © William Manning | Dreamstime.com
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Protein Content
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
Wheat
Lupin
s
Fie
ld p
eas
Chic
kpeas
Ric
e
Mung b
eans
Navy b
eans
Faba b
eans
Lentils
Barley
Oats
Maiz
e
Sorg
hum
Triticale
Pota
toes
Onio
ns
Carr
ots
Aspara
gus
Bro
ccoli
Caulif
low
er
Tom
ato
es
Mushro
om
s
Lettuce
Capsic
um
/chill
ies
Cabbage
Beans
Oth
er
Soy b
eans
Sugar
cane
Peanuts
Apple
s
Pears
Nashi
Avocado
Melo
ns
Pin
eapple
s
Bananas
Kiw
ifru
it
Mangoes
Table
and d
ried g
rapes
Ora
nges
Mandarins
Lem
ons/lim
es/g
rapefr
uit
Peaches
Necta
rines
Apricots
Plu
ms
Cherr
ies
Alm
onds
Macadam
ia
Berr
ies
Beef
Lam
b
Pig
meat
Poultry
Whole
milk
Cheese -
Cheddar
Cheese -
Non-C
heddar
Butter
Eggs
Tuna
Oth
er
fish
Pra
wns
Rock lobste
r
Abalo
ne
Scallo
ps
Oyste
rs
To
nn
es
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Protein©
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145
Trophic levels: a worrying trend
Bonhommeau, S. et al., “Eating up the world’s food web and the human trophic level”, Proc. Natl Acad. Sci. USA http://www.pnas.org/cgi/doi/10.1073/pnas.1305827110 (2013), cited in Hoag, H., “Humans are becoming more carnivorous”, Nature, 2 December, 2013 doi:10.1038/nature.2013.14282, http://www.nature.com/news/humans-are-becoming-more-carnivorous-1.14282
Trophic levels “represent a synthetic metric of species’ diet, which describe
the composition of food consumed and enables comparisons of diets
between species”.
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