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Earth Systems History News

April '06 | May '06 |


Arctic Ice an Early Arrival

May 2006 | Nature
Previously, geologists believed glaciers formed in Antarctica long before they appeared in the Arctic. The new evidence clears up this climate mystery and underscores the role that carbon dioxide and other greenhouse gases play in climate change, according to Steven Clemens, associate professor (research) and a co-author of the Nature papers.


Longest record of Ocean Surface Temps

April 2006 | Brown News Bureau
Using chemical clues mined from sediment cores Brown geologists have created the longest continuous record of a region of ocean surface temperatures, dating back 5 million years. The research, led by graduate student, Kira Lawrence, and published in Science, describes slow, steady cooling in the eastern equatorial Pacific.