While not an official term, "city-killing asteroids" refers to asteroids large enough to significantly damage cities if they ...

The most widely accepted scientific explanation for the arrival of all complex life on Earth has had an unsolved mystery at its heart. According to the theory, all plants, animals and fungi, known ...

Scientists propose that eukaryotes formed when an Asgard archaeon entered into a close partnership with an alphaproteobacterium. Over time, the two organisms became permanently linked. The ...

In the oceans and on land, scientists are discovering rare, transitional organisms that bridge the gap between Earth’s simplest cells and today’s complex ones.

The dream of reaching another star is no longer pure science fiction. This exploration follows humanity’s growing ...

Carl Sagan explains how science proves Earth’s shape—from ancient observations to modern space imagery—showing why our planet ...

"We would not have any way to go and actively deflect one right now," warns the scientist who led NASA's DART mission.

A broad coalition of health and environmental groups sued the U.S. Environmental Protection Agency (EPA) today over its ...

The event was attributed to a solar storm that lasted nearly a full day and will likely contend for the strongest of 2026.

The record-breaking sediment core acts as a geological archive, capturing 23 million years of climate history to predict how ...

A new study focused on cryptic species—animals that look the same but are genetically different—found that they’re more widespread among vertebrates than we previously thought.

Half of Earth’s oceans are more than 3.2km deep. Beneath them lie cavernous plains untouched by sunlight, vast gaping trenches made by Earth’s tectonic plates shifting, and ranges of underwater ...