At Harvard, they've got a world-class treasure trove of astronomical data, enough to make any skywatcher jealous. The only problem: they're in the form of half a million glass slides. Read more in our feature.
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.