If you find an individual with exceptional talent, why not clone it? That's an idea that may no longer be confined to the realm of science fiction, at least for dogs. South Korea's customs service has now deployed the world's first cloned sniffer puppies for hunting smuggled drugs.
Just 30 percent of natural-born sniffer dogs can normally pass the required training, but South Korean scientists hope that they can improve that to 90 percent by cloning best-of-breed dogs.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.