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

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

As human activity grows in the Arctic, underwater noise is spreading through icy waters, disrupting how many animals ...

When it comes to global warming and climate change, we often hear news stories about tipping points where Earth's systems shift into a new and dangerous state. One such may have been reached in the ...

New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

Remains of an ancient Arctic rhino indicate that land mammals traversed the North Atlantic via land bridges, and did so much more recently than previously thought.

Every year, gray whales embark on one of nature’s most epic migration journeys. Here’s what we know about it, according to ...

Scientists discover a tipping point that took place in 2000, where El Niño’s effect on sea ice loss in Siberia was amplified.

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

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 ...

Cutting down swathes of boreal forest and sinking the trees into the depths of the Arctic Ocean could remove up to 1 billion tonnes of carbon dioxide from the atmosphere each year. Coniferous trees ...