U.S. weapons laboratory scientists claim they have trained bees to sniff out explosives in a program they have called the Stealthy Insect Sensor Project.

Researchers at the Los Alamos National Laboratory in New Mexico said they trained honeybees to stick out their proboscis -- the tube they use to feed on nectar -- when they smell explosives in anything from cars and roadside bombs to belts similar to those used by suicide bombers.

By exposing the insects to the odor of explosives followed by a sugar water reward, researchers said they trained bees to recognize substances ranging from dynamite and C-4 plastic explosives to the Howitzer propellant grains used in improvised explosive devices in Iraq.

Haarmann said the bees could be carried in hand-held detectors the size of a shoe box, and could be used to sniff out explosives in airports, roadside security checks, or even placed in robot bomb disposal equipment.

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