By resurrecting a 3.2-billion-year-old enzyme and studying it inside living microbes, researchers at the University of ...

"A strong magnetic field is very important for life on a planet." ...

New research suggests Earth’s water came from sources other than meteorites, challenging long-standing theories on planetary ...

The Ediacara Biota are some of the strangest fossils ever found—soft-bodied organisms preserved in remarkable detail where ...

For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This coincided with the Late Heavy Bombardment (ca. 4.1 to 3.8 billion years ago), a ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Scientists have found compelling new evidence that humans, not glaciers, brought Stonehenge’s bluestones to the site. Using ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea ...

Scientists at the American Museum of Natural History investigated old specimens that had been at the museum for decades and ...

The moon is pretty inhospitable to humans, but recent research has found that it's surprisingly possible for breathable air ...

In high enough doses, hydrogen cyanide can kill an adult human in minutes, but the chemical may be the reason why we’re here ...

A NASA study shows that meteorites delivered only a small amount of water to Earth over the past four billion years.