The 366 daily episodes in 2014 were chronological snapshots of earth history, beginning with the Precambrian in January and on to the Cenozoic in December. You can find them all in the index in the right sidebar. In 2015, the daily episodes for each month were assembled into monthly packages, and a few new episodes were posted. Now, the blog/podcast is on a weekly schedule with diverse topics, and the Facebook Page showcases photos on Mineral Monday and Fossil Friday. Thanks for your interest!

Thursday, January 16, 2014

January 9. Early glaciers

By Richard I. Gibson

We tend to think of the early Earth as a hot place, and it was for the first few hundred million years of its history. But after the continents and oceans were more or less established, probably by around 3.8 billion years ago, recognizable surface climates also began.

Glacier photo by Richard Gibson.

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