Most robots are hard-shelled beasts, but some progress is being made with soft robots composed of artificial muscle and tubes instead of metal. One soft robot is the Meshworm, a creature built much like an ordinary earthworm. Maybe the Meshworm isn’t the speediest robot around, but it is tough, and can survive a good beating with a hammer. It also serves as a showcase for artificial muscle technology, which could be a big help in creating that ultimate cyborg body we all want.