Global Hawk drone aircraft are flying over Japan, inspecting damage from the earthquake and tsunami. We look at what a drone can do that a plane with people can't and where the drones might be used next.
"Green chemistry" was introduced more than two decades ago, but now one of its founders is trying to prove its profitability along with its usefulness.
Scientists are making strides in a field called "bioprinting." They're using essentially the same technology you use on your home printer to apply new skin to people. And they're working on printing entire three-dimensional functioning organs.
Dozens of apps for Android devices have been taken out of circulation by Google. They were apps that can take control of your phone without your even realizing it.
