Around 56 million years ago, Earth suddenly got much hotter. Over about 5,000 years, the amount of carbon in the atmosphere ...

In honor of Wildlife Conservation Day, these organizations are fighting for the world's most endangered habitats, and could ...

Over millions of years, dramatic shifts in global temperatures transformed ecosystems and forced early humans to adapt or die ...

Rising sea levels and storm surges from hurricanes will bring more frequent extreme floods to northeastern U.S. states, ...