This candy-pink lagoon in Spain is providing valuable clues about how extremophile microorganisms might exist on Mars despite the planet's harsh conditions.
Dust storms, also known as haboobs, occur when winds from dying thunderstorms push downward and pick up sand and dirt across desert areas. Amazing pics and video from last summer's haboobs in Arizona, here.
Sea levels have been rising since the end of the last Ice Age. But, as climate warms, the rate of the rise is accelerating. A new ESA video explains how we know.
As Earth rotates, its spin axis -- an imaginary line that passes through the North and South Poles -- drifts and wobbles. Scientists now have, for the 1st time, identified 3 reasons why.
Contrary to popular thought, birds wintering in the tropics survive the winter better than birds wintering in the U.S. That's despite the fact that tropical wintering birds migrate 3 to 4 times farther.
"We often think of plants as being passive and at the mercy of their environment. My jaw literally dropped when I first saw these videos ... They beautifully illustrate how active and complex plants really are."
Hurricane Florence is barreling for U.S. coast, right at the height of hurricane season. How do experts know when and where the next big hurricane is going to hit? It's complicated.