From Hudson Bay to the Chukchi Sea, meet 19 polar bear groups and the people racing to protect them as ice disappears.

Drawing on a decade’s worth of underwater sound data from Cambridge Bay in the Canadian Arctic, the researchers found that as climate change drives faster ice loss, the region’s underwater soundscape ...

Against the backdrop of Arctic warming, polar bears in Norway’s far north are gaining fat and feeding on new prey—a testament ...

Polar bears near Svalbard are gaining fat despite sea ice loss, revealing how some Arctic wildlife is adapting to warming.

Scientists say increasing shipping traffic is interfering with the whales’ ability to hunt and communicate. To protect the animals, conservation groups are urging the International Maritime ...

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. In ...

The lush greenery of the Amazon rainforest is often called the “lungs of the planet,” but really land plants are just half of the equation. The other lung dwells in the sea. Single-celled ...

Q. I enjoy learning about bizarre animals like the terrestrial one you recently wrote about called a hammerhead worm. With all the strange animals found on land, the oceans must be full of even more ...