The fossil of this new-to-science dinosaur offers a view into dinosaur-bird evolution.

New research shows that "severe" space super-storms occurred in 42 of the last 150 years. "Great" super-storms happened in 6 out of the last 150 years. The new work sheds light on the famous Carrington event of 1859, the largest super-storm in recorded history.

Researchers have discovered 4 new species of sharks that use their fins to walk, in waters off northern Australia and New Guinea.

"We found the world's oldest asteroid strike in Western Australia. It might have triggered a global thaw."

This Arctic whale has the only spiral tooth found in nature. But there’s more to the narwhal than its unique tusk.

Nearly a decade after the nuclear accident in Fukushima, researchers have found that wildlife populations are abundant in areas now devoid of human life.

For the first time, NOAA’s 2019 Arctic Report Card includes an indigenous perspective of the changes taking place in Arctic ecosystems.

The building blocks of life as we know it require chemical reactions involving phosphorus. But phosphorus is scarce on Earth. Where did enough of it come from to fuel life's start? Carbonate-rich lakes, like Mono Lake in California, might hold a clue.

The Earth might be crawling with undiscovered alien creatures whose biochemistry is very different from life as we know it. An astrobiologist explains.

According to independent analyses by both NASA and NOAA, Earth's global surface temperatures in 2019 ranked 2nd-warmest since 1880.