Happy Shark Week! In honor of the One True American Holiday (all other holidays are less true, due to lower shark content), I spent about an hour reading about sharks on Wikipedia. Important findings from a solid morning's research: sharks often have weird names. For example: the birdbeak dogfish. That's a real animal! Ditto the flaccid catshark and, perhaps weirdest of all, the porbeagle, which doesn't sound like a fish at all. Click through for 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.