Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all scientists agree.

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

Climate change is quietly rearranging the Amazon and Andes—winners and losers are emerging, and the Northern Andes may hold the key to forest survival.

Climate change caused drought and flooding is damaging Nigeria’s staple foods, maize, cassava, millet and yam, smallholder farmers say.

Belgian biathlete Maya Cloetens is concerned about the future of winter sports in a warming world. Training in Grenoble, France, in the hopes of competing in next month's Winter Olympics in Milan and Cortina,

The New York Times reported that the National Park Service removed a sign warning about the effects of climate change on the historic Fort Sumter site.