Just wanted to remind everyone that there's only one more weekend left to work on your re-purposed tech projects for our contest over at Instructables, so get cracking! April 1 is the deadline, meaning there's still time to grab some e-junk and turn it into something new and exciting. Head on over to the PopSci group to see what's been submitted to date—we're not going to single out any of our favorites just yet (must preserve impartiality!) but let's just say there have been some pretty amazing entries so far; some you might have even seen being picked up on blogs already. Check 'em out here. —John Mahoney
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.


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