Add Yahoo as a preferred source to see more of our stories on Google. Low-level cumulus clouds appear to trace portions of Houston's freeway network in this satellite image from Tuesday morning.

Clouds form when water vapor—an invisible gas in the atmosphere—sticks to tiny floating particles, such as dust, and turns into liquid water droplets or ice crystals. In a newly published study, we ...

Scientists have spotted microplastics, tiny pieces of plastic smaller than 5 millimeters, in some of the most pristine environments on Earth, from the depths of the Mariana Trench to the snow on Mt.

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. That's the surprising finding ...

This video created with the assistance of AI. Satellite imagery captured over Houston on Tuesday morning showed something unusual: rows of low-level clouds appearing to align with parts of the ...