The frigid weather gripping much of America is not unprecedented, but it feels that way. The 21st century has been unusually warm, likely due to climate change.

The shift due to climate change is comparable in magnitude to the differences across various emission scenarios currently used by the Intergovernmental Panel on Climate Change for climate assessments. Meanwhile, the atmospheric lifetime of the gas continues to decrease at a rate of 1.4 percent per decade.

Some tropical land regions may warm more dramatically than previously predicted, as climate change progresses, according to a new CU Boulder study that looks millions of years into Earth's past. Using lake sediments from the Colombian Andes,

The possibility of snow in Tampa, Fla. Record heat and fires in Australia. Scientists say climate change is exacerbating weather extremes.

Polar bears are the poster children of climate change—and for good reason. Researchers took more than 1,000 body measurements from 770 polar bears over 24 years around Svalbard, a Norwegian archipelago in the Barents Sea—an area that has seen an especially acute decline in sea ice over the decades.

JOHANNESBURG (AP) — Human-caused climate change worsened recent torrential rains and floods that devastated parts of southern Africa, killing more than 100 people and displacing hundreds of thousands, researchers said Thursday.

A warmer atmosphere can hold more moisture, and that’s why last weekend’s winter storm dumped more snow, sleet and freezing rain than similar weather systems might have in the past

The 19-year-old U.S. snowboarding star is fighting climate change to help protect the planet and the sport she loves.

The Minister of State for Climate Change and Sustainability, Seidu Issifu, has paid a courtesy call on the Chief Fire Officer of the Ghana National Fire Service, Daniella Mawusi Ntow Sarpong, in a high-level engagement aimed at