September 7, 2013 An experiment to test the value of e-cigarettes as a quitting aid found them as good as the nicotine patch, but there weren't enough people in the study to say they're a good bet for quitting. Public health officials worry that e-cigarettes will encourage tobacco use.
September 7, 2013 The LADEE spacecraft, which began its trip to the moon last night in a launch on Virginia's coast, ran into some mechanical problems, NASA says. But officials say the robotic probe remains on track to reach the moon next month.
September 6, 2013 Tamu Massif, first thought to be perhaps dozens of individual volcanoes, turns out to be just one — but it's really big. It's about the size of New Mexico.
September 6, 2013 If we had enough time, enough brain power, the right computers, the occasional genius, is there any limit to what we can know about the universe? Or is nature designed to keep its own secrets, no matter how hard we try to crack the code? What can we never know?
September 6, 2013 Ever wondered how Dustin Hoffman's character in Rain Man quickly counted all those toothpicks on the floor? Scientists have found a region of the brain that allows us to estimate quantities at a glance. Unlike Hoffman's Ray, though, most people are accurate up to only about five toothpicks.