The Blue Talkz...: Engineers create light-activated skeletal muscle for robots!

One more for the list of pretty awesome:

"Many robotic designs take nature as their muse: sticking to walls like geckos, swimming through water like tuna, sprinting across terrain like cheetahs. Such designs borrow properties from nature, using engineered materials and hardware to mimic animals’ behaviour.
Scientists at MIT and the University of Pennsylvania have genetically engineered muscle cells to flex in response to light, and are using the light-sensitive tissue to build highly articulated robots."