U.S. regulators said Friday that they would allow three new color additives made from natural sources to be used in the nation’s food supply. It comes after health officials pledged a sweeping ...

Green, murky water can signal more than an eyesore. Certain blooms raise safety concerns for swimmers, pets, and homeowners near lakes and ponds.

Snow isn't always white; algae can make it look green, red, or orange, and scientists are trying to understand how and why these colorful patches appear.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. U.S. regulators said Friday that they would ...

NORFOLK (AP) -- Huge ribbons of algae blooms have appeared in lower Chesapeake Bay, the result of a scorching summer and recent rains. The dark veins of algae have been reported from Mathews County ...

U.S. regulators said Friday that they would allow three new color additives made from natural sources to be used in the nation’s food supply. It comes after health officials pledged a sweeping ...