Remember those cows who seemed to align themselves with the magnetic poles while grazing? Turns out the earth might not be the only thing prompting the cows' positioning. The same researchers who studied Google map images to draw their earlier conclusion have found that power lines, too, seem to cause the bovines to stand facing particular directions.
Also in today's links: phantom pain in a phantom limb, a new player in Internet movies, and more.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.