Scientists have known for a long time bees have a great sense of smell, and now they’ve figured out how to get them to work for us. Bees in the Stealthy Insect Sensor Project have been taught to stick their ton-gues out when they sniff explosives. The bees are kept in jars, with heads sticking out so they can smell anyth-ing dangerous. The team have made the most of the fact that bees automatically stick their tongues out when they think they’re about to get some nectar. Every time a bee identified an explosive, they were given nectar. After a while, the smell of explosives made them expect a nectar treat, so they stuck out tongues.