Most scientists find a topic that interests them and keep digging deeper and deeper into the details. But Ken Caldeira takes the opposite approach in search for solutions to climate change. He goes after the big questions, and leaves the details to others.
From NPR News, this is ALL THINGS CONSIDERED. I'm Robert Siegel.
MELISSA BLOCK, HOST:
And I'm Melissa Block.
The failure of gun control measures to get through Congress yesterday stands in sharp contrast to sweeping moves approved by some state legislatures after the Newtown shootings. Colorado, New York, Maryland, and Connecticut all passed broad expansions of gun control laws.