Purposefully sinking boreal trees could help lock away carbon for millennia or longer, but the audacious plan comes with ...

The Red Planet may have once been half blue. A sea the size of Earth’s Arctic Ocean blanketed part of Mars about three ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

In 2006, scientists released the first version of the Arctic Report Card, now a staple at the Fall Meeting of the American ...

The Arctic Ocean, once locked in a vault of thick, old ice, now is transforming at lightspeed. Temperatures there are increasing at up to four times the rate of the planet overall, melting sea ice ...

A conveyor belt of ocean water that loops the planet and regulates global temperatures could be heading for a tipping point.

For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ice ages. Now, a new study published in Science Advances challenges this idea ...

The Trump administration is eying the possibility of oil leasing in Arctic Ocean areas more than 200 miles from shore, an area where U.S. territorial rights are unclear. Information about the Trump ...

Space Norway has signed a contract with the Norwegian Defence Estates Agency, Forsvarsbygg, for support in constructing a cable landing station on Jan Mayen, a Norwegian island in the Arctic Ocean.

The Trump administration is eying the possibility of oil leasing in Arctic Ocean areas more than 200 miles from shore, an area where U.S. territorial rights are unclear. Information about the Trump ...