National Academy of Sciences

Climate Change
5:12 am
Fri February 4, 2011

National Academy of Sciences president: people are contributing to climate change

President of the National Academy of Sciences Ralph Cicerone says rising sea levels—and the loss of ice from polar regions—are at least partially caused by human activities. (Karen de Seve)

There is strong evidence that human-produced greenhouse gases—like carbon dioxide and methane—are changing the Earth’s climate.

So says the President of the National Academy of Sciences, Ralph Cicerone.

He spoke about the science of climate change at the Saint Louis Science Center this week.

And Cicerone told St. Louis Public Radio’s Véronique LaCapra that although the climate has changed in the past, this time is different.

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