Tiny, invisible gases long thought to be irrelevant in cloud formation may actually play a major role in determining whether clouds form—and possibly whether it rains.

Analysis of asteroid Bennu samples suggests life's building blocks formed in frozen outer Solar System, not warm asteroid interiors.

In a new study, researchers say that nonbiological sources they considered could not fully account for the abundance of ...

Don't just grab any fertilizer. Learn the differences between organic, natural, and synthetic options to make the best choice for your garden.