Arsenic is a deadly poison for most living things, but new research shows that microorganisms are breathing arsenic in a large area of the Pacific Ocean.

STEVE is a majestic sky phenomenon, similar to well-known auroras, but not as well understood. Now, a new study provides an explanation.

New evidence that volcanic eruptions caused the Great Dying, a mass extinction 252 million years ago that killed off 95% of life on Earth.

In fact, they’re one of nature’s best animal dads. This month – autumn in Antarctica – their breeding cycle begins. But there’s still a long winter ahead.