Arctic rivers wind through remote tundra and boreal forests, freezing solid in winter and surging each spring with snowmelt, eventually emptying into the ocean. Runoff—water that does not soak into ...

The retreat of ice in the Barents Sea could be strengthening a key ocean current that regulates global climate.

Arctic sea ice helps cool the planet and influences weather patterns around the world, but it is disappearing faster than ever as the climate warms. Scientists have now developed a new forecasting ...

You've probably noticed the headlines. Ice is melting faster than before, glaciers are shrinking, and polar regions are changing in ways that seem almost hard to believe. Scientists who study these ...