Retired astronaut Mark Kelley became a crusader for tougher gun control laws after his wife, former Congresswoman Gabrielle Giffords, was shot. We'll talk to him about the political realities of trying to pass stiffer gun laws.
Experts see big opportunities for drones in farming
The Federal Aviation Administration is developing regulations to open the skies to drones by 2015. Agriculture is expected to be one of the largest potential markets for drones.
Cronkite News reports companies like Yamaha have been selling unmanned aerial vehicles for years in Japan. They spray fertilizer and herbicide over farms there, a success the company hopes to soon repeat in the U.S. Experts predict drones will also be used to survey farms to pinpoint the need for fertilizer and pesticides.