The document from the agriculture committee of the Rome-based United Nations' Food and Agriculture Organisation, dated late March, also said that climate change could lead to increased global insecurity and human population movements. The FAO report predicted a migration of crops, animals and ecosystems, and a loss of biodiversity. It made no mention of the United States' decision on March 28 to abandon the 1997 Kyoto treaty to fight global warming. Strong protest from around the world has greeted President George W. Bush's decision to ditch the Kyoto agreement, which aims to slow global warming by committing countries to cut their emissions of a range of gases, including carbon dioxide. Environmental activists say the United States has just six percent of the world's total population yet produces a quarter of the globe's greenhouse gases.
Agriculture is responsible for an estimated one third of global warming and climate change.
Most of the methane in the atmosphere comes from domestic ruminants, forest fires, wetland rice cultivation and waste products, while conventional tillage and fertilizer use account for 70 percent of the nitrous oxides.