Why does giving up meat make a difference?
It is far more efficient to grow food to feed people directly. For every kilogram of feed a cow eats, and every 11,000 litres of water used, we get back just one burger. Producing one kilogram of beef takes over 50,000 litres of water. Compare that with the 1550 litres of water it takes to produce one kilogram of rice.
It’s not just that cattle use enormous quantities of water and eat more food than they produce as meat. Livestock are also a major source of methane, which is as damaging a greenhouse gas as carbon dioxide. We’re talking here of all animals raised for food – pigs, goats, hens, sheep, etc.
Scientists at the Netherlands Environmental Assessment Agency estimated that cutting back on meat could wipe $20 trillion from the cost of fighting climate change through decreasing greenhouse gases, creating carbon sinks in the form of unused farmland and by reducing the need for technologies such as ‘clean coal’. (New Scientist, Feb. 2009) |