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The frozen history of climate change

August 1st, 2012
02:33 PM ET

Scientists Lonnie Thompson and wife Ellen have made it their personal quests to unlock the frozen history of our climate. He is one of a small group of scientists whose research actually led to the discovery of global climate change. And she leads a major polar research team at the Ohio State University, where they both work.

CNN’s Meredith Milstein produced this piece for television.


Filed under:  Christiane Amanpour • Latest Episode
soundoff (4 Responses)
  1. Jeff Reding

    Sorry if this is a duplicate, but there is no such thing as climate change. The Republicans told me so.

    August 1, 2012 at 4:25 pm | Reply
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  4. Donn Grebin

    Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions, or in the distribution of weather around the average conditions (i.e., more or fewer extreme weather events). Climate change is caused by factors that include oceanic processes (such as oceanic circulation), biotic processes, variations in solar radiation received by Earth, plate tectonics and volcanic eruptions, and human-induced alterations of the natural world."

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