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James Hansen Keystone Xl Pipeline

Famed Climate Scientist Has Advice For Obama On Keystone XL

The Huffington Post | Lucia Graves | Posted 04.04.2013 | Green

On Thursday, after retiring from NASA to pursue environmental activism, James E. Hansen published an op-ed in the Los Angeles Times warning that the K...

WATCH: James Hansen Explains Why He 'Must Speak Out About Climate Change'

Posted 03.07.2012 | Green

Climate scientist Dr. James Hansen, began a recent TED talk with two important questions. He asks, "What do I know that would cause me -- a retice...