Cosmic events like asteroid impacts or supernovae could destroy life on Earth. Our Sun is gradually getting hotter, eventually boiling Earth's oceans. Life on Earth is not permanent; it will end due ...

Humanity’s relationship with the moon has always been simple. One planet, one moon — a cosmic partnership as reliable as sunrise. But that clarity just got murkier. Astronomers have confirmed ...

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

Climate change. Habitat loss. The increasing spread of invasive species. These are just a few impacts of human activity — and to the animals on the front lines, even the slightest shift can feel like ...

Water leaking into the Earth may be wrapping the core in crystals, a study has suggested. The study may help explain a weird area in the outer core that has long puzzled scientists. One expert said ...

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

Imagine a planet much like Earth, except instead of green trees dotting its swaths of land, two species of flowers—black daisies and white daisies—are the dominant plant life. The flowers are ...

Earth’s crust teems with subterranean life that we are only now beginning to understand. Credit...Illustration by Brian Rea. Animation By Delcan & Co. Supported by By Ferris Jabr Ferris Jabr is a ...

More than 8 billion people inhabit our planet, and each year Earth Day reminds them of the need to take care of their home. The springtime holiday, which takes place today—April 22—dates back to 1970, ...

Our planet set a record for completing one rotation faster than scientists had ever previously recorded, according to TimeAndDate.com. Earth rotated once around its axis on Wednesday, June 29, in 1.59 ...