摘要
乔恩·福利：农业成为温室气体最大的排放主体之一。全部的温室气体大约有30％来自我们已有的农业用地或正在开垦的土地，这比全球发电排出的温室气体要多，比全球交通排出的温室气体也要多。
Jon Foley： Agriculture turns out to be one of the biggest emitters of greenhouse gases. About 30% of all of our greenhouse gases come from either clearing land or farming land we already have.That＇s more than all the world＇s electricity. It＇s more than all the world＇s transportation.
