products. All of this comes at a substantial cost to the environment.
immediate and far-reaching changes in current...
Causes of Global Warming and Climate Change
Changes in climate can be influenced by both natural and human factors. One natural warming phenomenon is the greenhouse effect.
Three important greenhouse gases are carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). In naturally occurring quantities, these gases are not...
“Livestock’s Long Shadow: Environmental Issues & Options,” found that meat, egg, & milk production are responsible for an estimated 14.5%, or nearly one-fifth, of human-induced GHGs.
2010 study in the Proceeding of the National Academy of Sciences found that, based on projected product
demand, the sector’s GHG emissions may increase 39% by 2050.
projected to emit over two-thirds of the amount of GHGs considered safe by 2050.
Farm animals are significant contributors to the production of all three major GHGs, and, as their numbers grow, so do their emissions.
emissions from agriculture.
experience most natural behavior. In addition to these impacts on animal welfare...
in converting feed to edible protein. “If animals are considered as ‘food production machines’,” a team of
Swiss and Italian scientists concluded, “these machines turn out to be extremely polluting…and to be very
Carbon dioxide is widely considered the most important human-induced GHG.
The farm animal sector contributes approximately 9% of annual anthropogenic CO2 output...
necessary to maintain and feed them.
Burning fossil fuel to produce fertilizers used in feed production releases significant amounts of CO2...
main input in modern farm animal production is artificial nitrogenous fertilizer, vast amounts of which are used
in the cultivation of farm animal feed.
fertilizer requires around 1% of the global energy supply,
94 and an estimated 41 million tonnes of CO2 is emitted
each year from fertilizer production exclusively for feed crops.
Maintaining intensive animal production facilities, as well as growing the associated animal feed, may emit 90 million tonnes of CO2 per year due to requirements such as electricity and diesel fuel...
to the FAO, feed production accounts for over half of the energy used for animal agriculture systems. This
does not include the energy used to make fertilizer (discussed above), but the energy used for seed, herbicides, and pesticides,...
As agriculture becomes increasingly globalized, meat, eggs, milk, and live animals are transported farther than ever before. Approximately 45 million cattle, pigs, and sheep are traded around the world each year,104 and millions more are...
Processing eggs, too, is energy intensive, w/ more than 6 MJ used per dozen.
Land uses are continually changing. Around the world, animal agriculture is often an important cause of these
Expanding farm animal production plays a major role in deforestation, turning wooded areas into grazing land and cropland for the production of feed.
atmosphere each year.
the atmosphere. Thus, deforestation releases large amounts of carbon, both from soil and vegetation.
Director General of CIFOR, “cattle ranchers are making mincemeat out of Brazil’s Amazon rainforests.” Brazil is the fourth-largest GHG emitter, largely because of agricultural burning in the Amazon, which contributes some 70% of the country’s emissions.
The FAO estimates that animal agriculture-related releases from cultivated soils worldwide may total 28 million tonnes of CO2 annually.
emitted annually from cultivating corn, soybean, and wheat on approximately 1.8 million km2
of arable land to geed animals raised for meat, eggs, and milk.
cover, which then allows CO2 to escape...
atmosphere rather than being utilized...
farm animals globally. Animal manure accounts for 6% of U.S. agricultural nitrous oxide emissions.
Methane has at least 25 times the GWP of carbon dioxide,164 and its concentrations increased by approximately 150% between1750 and 2005;...
one of the most significant sources of anthropogenic methane, responsible for 35-40% of methane emissions
Direct and immediate actions are required to mitigate and prevent the problems associated with climate change.
Mitigating the animal agriculture sector’s significant yet under-appreciated role in climate change is vital for the health and sustainability of the planet, the environment, and its human and nonhuman inhabitants.
environmentally sound & animal welfare-friendly practices into daily life, including adopting consumptive habits less reliant on meat, eggs, & dairy products, can significantly slow the effects of climate change.
on Global Warming and Climate Change