The U.S. Forest Service bans the use of long-term fire retardant on federal lands near waterways or endangered species ...

By now, you have surely seen many images of planes dropping a red liquid on the Los Angeles fires. It's not just water. A ...

Although brown and earthy tones were more readily available, evidence indicates that humans had a clear preference for ...

During a total lunar eclipse, the lunar surface turns a rusty red color, earning the nickname "blood moon". The eerie red appearance is caused by sunlight interacting with Earth's atmosphere.

It's called a red tide because it can turn the ocean a rusty red color. Red tides are formed by Karenia brevis, a microscopic but powerful organism that occurs naturally in the Gulf of Mexico.