World affairs editor Sam Kiley has been covering Ukraine since the Russian invasion of 2014. Here he looks at the current state of the conflict, the likelihood of a lasting ceasefire and what Russian ...

The Tasman Sea's winter temperatures can influence heat flow to the Antarctic Peninsula through atmospheric ripple effects.

To hear from this entrepreneur offers valuable insight into why the president's business-minded non-MAGA constituency is ...

Scientists thought La Niña was coming. It didn't — at least for now. What could that mean for this year's hurricane season, ...

The disappearance of sea ice in polar regions due to global warming not only increases the amount of light entering the ocean ...

The world's oceans are heating faster in two bands stretching around the globe, one in the southern hemisphere and one in the north, according to climate scientists.

Wildlife rescuers are struggling to keep up with the demand to help stranded and sick marine life along the West Coast.

It’s a real threat, and it has a component of uncertainty. We’re not sure what will happen. We have to think for the long ...

Sunflower sea stars discovered taking refuge in fjords may offer clues to saving the critically endangered species from sea star wasting disease.

Reoxygenation approaches have shown some success in lakes, but their potential risks must be examined carefully before ...

A team of scientists tracked more than 400 corals that experienced intense ocean heat last year. More than half the corals died.

Climate change's profound reshaping of conflict dynamics is already underway. The question facing humanity now is not whether ...