If you've ever looked at Mars through a telescope, you probably noticed its two polar ice caps. The northern one is made largely of water ice—the most obvious sign that Mars was once a wetter, warmer ...

WASHINGTON (voa) – U.S. satellite observations show a continuing retreat of the North Pole ice cap, as the Arctic warms. Scientists say the shrinking ice cover feeds global warming, but is also ...

If you pull an ice core from the outer edges of the Arctic polar cap, you might spot what looks like a faint line of dirt. Those are diatoms—single-celled algae with outer walls made of glass. Their ...

It’s one of the most pressing questions facing climate scientists today: how vulnerable are the vast ice caps on Greenland and Antarctica to rising temperatures? An unfathomable amount of ice is ...