Researchers have found a scourge for the 33 million tons of plastic dumped each year in the US: mealworms. A team from Stanford and China's Beihang University found that the beetle larvae stay perfectly healthy eating just Styrofoam, which is normally considered non-biodegradable. Better still, the worms convert the plastic to CO2 and waste that's safe to use as soil for crops. The scientists were as surprised by the discovery as you might be. "There's a possibility of really important research coming out of bizarre places," said Stanford professor Craig Criddle. "This is a shock."