When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space. But what if the real danger comes from much smaller, barely detectable ones?

Vast, quasi-circular features on Venus's surface may reveal that the planet has ongoing tectonics, according to new research ...

A study in Nature finds that with bold and coordinated policy choices—across emissions, diets, food waste, and water and ...