The contiguous U.S. has warmed 2.1°F since the first Earth Day in 1970.
While this has been a snowy winter, the past 50 years have shown a trend of less overall spring snow cover in the Northern Hemisphere.
Spring is arriving earlier across the U.S. by an average of three days.
If it seems like autumn leaves are taking longer to change color, you're not imagining things. Over the past 25 years, the onset of autumn has shifted.
A look at which states were hit hardest by extreme climate and weather events in 2011.
Based on the 2010 Census and Climate Central's map analysis, climate change-related sea level rise has put more New Yorkers at risk of flooding from Hurricane Irene.
A visual look at six plant species that are already being affected by climate change.
Photos from one of the worst tornado seasons to ever hit the U.S.