Governor Jerry Brown is joining some of the nation’s leading scientists on Thursday to release a "call to action” on climate change -- an unusual step for the scientific community.
More than 500 scientists from around world signed a joint statement drafted by California scientists, in the hope of sending a unified message about the changing climate.
“One of the big points we’re trying to make is that there’s not debate about the reality of these issues,” says UC Berkeley paleontologist Anthony Barnosky.
The statement came about after Barnosky published a paper on climate change last year and got a phone call from Governor Brown.
“In the course of the conversation he said, 'Well, if all this stuff is such a big deal, why aren’t scientists shouting about it?'” says Barnosky.