Today at 11:42 AM EST, SpaceX's Dragon spacecraft boldly smacked into the Pacific Ocean, just as planned. Here it bobs, waiting for recovery by boats, which will tow it back to land. For more coverage of SpaceX's recent launch, click here.
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.