The United States,China,and Russia-three of the world's major greenhouse gas emitters-agreed in 2001 to participate in a cap-and-trade program to slow global warming.

This statement is false. The United States, China, and Russia did not agree to participate in a cap-and-trade program in 2001. The Kyoto Protocol, which established a cap-and-trade system, was adopted in 1997, but the United States did not ratify it, and China and Russia were classified as developing countries exempt from binding targets.