CO2 concentrations in the atmosphere have been above 400 ppm for three months in a row for the first time.
The first five months of the year in Alaska have been unusually warm, particularly in far northern Barrow.
May 2014 was the warmest May on record. With a developing El Niño, 2014 could be the warmest year.
From leaking derelict oil wells to intense folds in Greenland's ice, here are 6 stories worth a click.
A citywide effort is tackling a problem that few residents think about: rising seas and coastal erosion.
A regional look at how summer temperatures have been steadily rising across the U.S. since 1970.
Increasing use of air conditioners are worsening the problem of cities getting hotter as climate changes.
Heat waves and water shortages could devastate U.S. farmlands devoted to corn crop, a new report warns.
Vermont is getting warmer and wetter, according to the first state-level climate assessment in the nation.
Better grab your calamine lotion. More CO2 means bigger poison ivy plants.
Temperatures have been on the rise in Brazil since the last time it hosted the World Cup.
The EPA's proposed Clean Power Plan follows many ups and downs in power plant CO2 emissions.
Early spring snowmelt in the Northern Hemisphere could speed ice melt in Greenland.
A decrease in winter fog has made driving safer, but is hurting California's $15 billion fruit & nut crop.
A late fall warm spell in Australia extends a period of record warmth influenced by global warming.
New renewables status report shows China is beating the U.S. in renewables investments.
One map shows Atlantic waters are warming in time for hurricane season but they're not quite there yet.
El Nino has been the climate phenomena on everyone's lips, but how will we know when it's arrived?
With few exceptions, summer temperatures across the U.S. have risen since 1970.
Brazil’s worst drought in decades is severely reducing hydropower energy supplies in advance of World Cup.