As water freezes, ice crystals push around gases that get trapped as cloudy bubbles. Directional freezing avoids it, the same way clear lake ice forms.

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Over the past 230,000 years, the growth and retreat of the Icelandic ice sheet have led to major changes in the seawater ...

In recent years global warming has left its mark on the Antarctic ice sheets. The 'eternal' ice in Antarctica is melting faster than previously assumed, particularly in West Antarctica more than East ...

The rhythmic expansion and contraction of Antarctic sea ice is like a heartbeat. But lately, there's been a skip in the beat. During each of the last two summers, the ice around Antarctica has ...

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Four billion years ago, lava spilled onto the moon’s crust, etching the man in the moon we see today. But the volcanoes may have also left a much colder legacy: ice. Two billion years of volcanic ...