We all know that dogs' noses are much better than ours. Not only do canines have 50 times more olfactory receptors than humans, they also have a much better technique for inhaling samples of air. Scientists at the U.S. National Institute of Science and Technology, NIST, unlocked that secret. VOA's George Putic reports.
Dogs’ Noses May Improve Bomb-Sniffing Devices
