Fly little Fly!

A life-size, robotic fly has taken flight at Harvard University. Weighing only 60 milligrams, with a wingspan of three centimeters, the tiny robot's movements are modeled on those of a real fly.

While much work remains to be done on the mechanical insect, the researchers say that such small flying machines, in swarming 1000s, could one day be used as spies, or for detecting harmful chemicals, and even clean your house dust up.