Kevin Parker, global head of asset management for Deutsche Bank, tells host Kai Ryssdal why he is currently steering investors away from American companies developing clean-energy systems and products.

A California utility is aggressively developing power sources cleaner than coal -- natural gas, nuclear, hydro, wind, solar ... and now even cow manure. But Pacific Gas & Electric isn't turning green totally on its own. It's the law. Sarah Gardner reports.

China churns out solar panels, wind turbines, and more alternative energy than any other nation. It's also tops at spewing greenhouse gases, from all the coal it burns. But China sees a green lining there, too. Scott Tong reports.

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.