Researchers are creating advanced simulations that will provide a deeper understanding of Mars's climatic history and help to ...

Sarah Palmer is a photographer based in Toronto. She explores pop culture and current events with a focus on the subcultures ...

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 ...

This story appears in the May 2019 issue of National Geographic magazine. Washington’s Mount Rainier boasts the largest collection of glaciers on a single peak in the contiguous United States.