Perhaps the most thrilling implication of the deep biosphere is what it means for the search for extraterrestrial life. If microbes can survive kilometers below the Earth’s surface, it’s ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...

Severe turbulence, record rainfall, killer heatwaves and raging wildfires to name but a few: is it just me, or is "Is Earth's weather getting weirder?" The answer? Yes. Well, sort of. These ...

The ozone layer plays a critical role in shielding the biosphere from deadly UV radiation. It blocks 99% of the sun's powerful UV output. Earth's magnetosphere also shelters us. But the sun is ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a ...

Previous research showed they contained enough hydrogen to account for the formation of Earth’s oceans, but it identified the location of only about 20 percent of the hydrogen in these meteorites.