Making a worm do more than squirm

Scientists use a laser to manipulate nematode, learn about complicated behaviors

View a video of a laser-controlled worm

HOW THE WORM TURNS A laser system (left) controls the behavior of worms by commandeering nerve cells using light (right). Leifer et al/Nature Methods 2011

Satirist Stephen Colbert envisions his “Colbert Nation” mentally marching in lockstep with his special brand of patriotism.