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.

Satellite images showed clouds lining up with Houston highways Tuesday morning. Here's what meteorologists say may have ...

An interesting phenomenon unfolded Monday in the sky over Houston as nearly perfect rows of clouds were spotted. Video submitted to us by a subscriber showed the unmistakable appearance of what are ...

Rising temperatures are thought to reduce the number of ice crystals in clouds, leading to the formation of liquid-dominated clouds. However, a new study has found that Arctic warming is causing an ...

Miriam Freedman (left), professor of chemistry at Penn State, and Heidi Busse, a graduate student at Penn State, studied the freezing activity of four different types of microplastics to see how they ...