See ancient Earth from space

Publication: msnbc.com   Date: April 21, 2011   View Article

Over the past 750 million years, our blue marble has gone through remarkable changes— continents have shifted, ice ages have come and gone, sea levels have risen and fallen, and one-time deserts have turned green, allowing creatures to crawl out of the oceans and live off the land.

These changes are now being made visible by the Planetary Habitability Laboratory at the University of Puerto Rico at Arecibo. The first set of the Visible Paleo Earth visualizations are being released today, on Earth DAy, and more will be available in coming weeks.

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