Worldwide, the first five months of 2010 were the warmest on record. With the US now getting its share of a heat wave, how will it affect the public perception of climate change?
With more people expressing doubts about global warming, passing climate legislation in Congress will be more difficult.
Criticisms of climate change science are piling up as public concern wanes. But evidence of global warming continues to accumulate.
A new guide gives advice for talking with people who don't accept climate change, in hopes of getting them to change their minds.