Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising temperatures are once again causing the world’s oceans to turn green.

What was Earth like billions of years ago? How did life emerge? And how did humanity come to dominate the planet? This video ...

The giant-impact hypothesis posits that billions of years ago a Mars-sized body named Theia collided with the early Earth.

The space telescope Gaia has created the largest three-dimensional map of the Milky Way ever. On January 15, 2025, Gaia shut ...

Last week, we discussed the Dog Star, Sirius, the sky’s brightest star. Orbiting Sirius is a faint companion, a tiny star known informally as the Pup.

Spokeo analyzed state government information and other historical sources to compile this list of stories behind every ...

Trump and Musk sit for Hannity interview as president blames Ukraine for Russia invasion: Live updates - Interview comes as ...

Fossils and genetics are starting to point to life emerging surprisingly soon after Earth formed, when the planet was ...

The threat from space rock 2024 YR4 has surpassed that of Apophis, an asteroid feared by scientists 20 years ago. The danger ...

Deep-seated mantle structures known as LLSVPs have been found to be over a billion years old, affecting tectonic activity.

Fluctuations in ancient Earth’s environment might have propelled the chemical complexity that laid the foundation for life.

An asteroid that could level a city now has a 3.1 percent chance of striking Earth in 2032, according to NASA data released ...