The cool conditions which have allowed ice caps to form on Earth are rare events in the planet's history and require many ...

Throughout Earth's history, ice caps have been very rare, but a model of the past 420 million years suggests an explanation ...

A Freeze Watch was issued for Tuesday evening through Wednesday morning, when snow, sleet and/or ice are expected. Rare winter storm in Florida:See snow photos from Pensacola, Tallahassee ...

Every state but Hawaii, California and Florida is likely to get a taste of wind chills of 20 degrees or colder.

Extensive evidence, including global temperature and sea ice data, shows Earth's climate is changing due to human activity.

Rising temperatures are fueled, in part, by declining cloud cover — which could be a potential climate feedback loop.

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