The Arctic ecosystem, spanning Siberia, Alaska, the Nordic countries, and Canada, has been accumulating carbon for thousands of years, helping cool the Earth’s atmosphere.

Climate change is starving the Arctic Ocean of essential nutrients, with the region's six largest rivers now delivering far less of the type of nitrogen that marine ecosystems need to survive.

More than 800,000 km2 of the Arctic were affected by human activity in 2013, according to an analysis of satellite-derived data on artificial light at night. On average, 85% of the light-polluted ...

Embedded in the sea ice of the arctic are creatures so small, you can't see them with the naked eye. These microalgae convert energy from sunlight into fuel. The arctic ecosystem depends on them ...