Al Gore talks with Kai Ryssdal about what it will take to get nations and businesses to change to a low-carbon economy, and what they stand to gain from it.

If global warming's worst effects are to be averted, new energy sources must be developed on a massive scale. But there will be winners and losers in that process. Sarah Gardner and Sam Eaton take us to two locales with stakes in America's energy future.

Rapid population growth tests the Philippines’ ability to feed itself. And spurs a rethink on one of the globe's most controversial issues.

In Brazil there's a movement afoot encouraging households to pee in the shower. They say it can reduce your water consumption by the equivalent o...