New doubts on warming, but most favor action

A broad majority say global warming has been happening and is a serious problem, but skepticism about climate change has grown since 2006. Most favor cap and trade and prefer U.S. action to combat warming regardless of what other countries do. This Washington Post-ABC News poll was conducted by telephone Nov. 12-15, 2009, among a random national sample of 1,001 adults including users of both conventional and cellular phones. Results from the full survey have a margin of sampling error of plus or minus three points. Sampling, data collection and tabulation by TNS of Horsham, Pa.