U.N.

For $12 Trillion, Everything Can Go Right

That's how much it will take to get nearly the entire world powered by renewables in 2050.READ»

Cell Phones to the Rescue, for Iraqi Refugees

The U.N. will soon be giving out food vouchers, via SMS.READ»

Rwanda to Obama: Emulate George W. Bush, Not Bill Clinton

Why the country's officials say they're taking a wait-and-see approach to the new administrationREAD»

• Special Report: Rwanda Rising