The first quarter of the 21st century was unusually warm by historical standards, so a prolonged cold spell this winter is unfamiliar to many people, especially younger Americans.

Human-caused climate change boosted the destructive winds and rain unleashed by Hurricane Melissa and increased the temperatures and humidity that fueled the storm, according to an analysis released Thursday. The rapid analysis by World Weather Attribution ...

A science-oriented advocacy group moved its “Doomsday Clock” to 85 seconds to midnight, saying the Earth is closer than ever to destruction.

The Weather Channel projects the expected snowstorm to impact as many as 230 million Americans.

As rising global temperatures alter ecosystems worldwide, animal species usually have two choices: adapt to changing local conditions or flee to a cooler clime. Ecologists have long assumed that the world’s bird species were best equipped to respond to ...

In late spring last year, Betty Hodgson, president of the Nova Scotia non-profit group Friends of the Pugwash Estuary, sat in the bow of a small boat with Kristina Boerder, a marine biologist at Dalhousie University. As they maneuvered the dinghy through ...

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