All regions of the continental U.S. have seen the frost-free season, defined as the stretch between the last below-32°F reading in the spring and the first in the fall, grow longer.
A graphical look at the top indicators of a warming world.
2014's Arctic sea ice minimum isn’t going to be as low as the record set in 2012, but it will be well below the 1981-2010 average.
September marks the end of winter when the sea ice that surrounds Antarctica swells to its maximum extent.
The relentless heat that has plagued the western half of the country this summer has ratcheted up California’s terrible drought once again.
Record lows are outpacing record highs since last year. This is becoming rarer in a warming world.
Better grab your calamine lotion. More CO2 means bigger poison ivy plants.
The Power Dissipation Index for hurricanes has been on the rise since 1970, along with sea surface temperatures.