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U.S. Assistant Secretary of State David Welch makes an unexpected visit to Lebanon for talks with Lebanon's government on a solution to the Israel-Hezbollah conflict. Meanwhile, Israel intensifies a ground offensive in southern Lebanon.

Germany relies on Russia for around half its natural gas and its companies do extensive business with both Russia and Ukraine. The effects of those ties fraying is being felt on the ground in Germany.

Unmanned aircraft offer spectacular bird's-eye views, and news organizations are eager to deploy them to get that perspective. But U.S. regulators currently prohibit drone use for commercial purposes.

In 1961, it was Jack ReVelle's job to make sure two hydrogen bombs that had accidentally dropped over North Carolina didn't explode. At StoryCorps, he tells his daughter about recovering the bombs.

After determining that the Syrian government has crossed a red line by using chemical weapons, the White House has agreed to start sending military aid to the rebels. Some analysts think it may be too late to tip the balance in Syria, where Assad's forces backed by Hezbollah, Iran and Russia have been gaining ground.

A deep and persistent drought has parched much of Kansas, and wheat farmers there now expect the smallest harvest in at least 60 years.

University of Michigan professor Arthur Kuo's research team has created a new knee brace that stores the residual energy a person makes while walking. They report that walking for one minute can generate enough energy to power the average cell phone for 10 minutes. Andrea Seabrook speaks with Kuo.

A Navy warship shot down a dying American spy satellite that was due to crash to Earth. The Pentagon said it feared if the satellite hit the ground and ruptured, it would release a toxic gas. But some think the Pentagon had an ulterior motive in shooting down the satellite.

As Congress and the White House grapple over immigration overhaul, Rachel Martin to Doris Meissner, former head of the Immigration and Naturalization Service, about border security.

IBM's supercomputer has crushed Jeopardy!Now chefs are using Watson to come up with new kinds of recipes that work around dietary restrictions and other limitations.