By Jacob Ward
How neuroscience will fight five age-old afflictions. By Virginia Hughes
With a decade of war winding down, post-traumatic stress disorder is an increasingly urgent problem. The U.S. Army has launched an ambitious effort to fight it. But will it work? By Matthieu Aikins
Engineering advances have architects striving for the mile-high skyscraper. By Clay Risen
Brain damage has unleashed extraordinary talents in a small group of otherwise ordinary individuals. will science find a way for everyone to tap their inner virtuoso? By Adam Piore
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.