Satellite data shows the ground is sinking beneath many of the world’s biggest river delta cities, worsening flood and sea-level rise risks.

Stone tools found in Israel are at least 1.9 million years old, showing humans left Africa earlier than scientists once believed.

Antarctica’s Hektoria Glacier stunned scientists by retreating eight kilometers in just two months, with nearly half of it ...

For scientists who study the Southern Ocean, a long-standing silver lining in the gloomy forecast of climate change has been the theory of iron fertilization. As temperatures rise and glaciers in ...