Electrical impulses sent to a paralyzed man’s spinal cord allow him to walk again, researchers say. Rob Summers, 25, can voluntarily move his feet and hips and walk on a treadmill with support, in what could be a major breakthrough for the treatment of paralysis.
Medicine has increasingly looked to the placebo effect's seemingly mysterious power to make people feel better in the absence of painkillers or pharmaceutical drugs. Now researchers have used fMRI scanners to pinpoint specific cells in the spinal cord that they believe are responsible for this ability to deaden pain.
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.