The ghosts and goblins may be prowling about for tonight and tonight only, but the DIY-ers are keeping the terror alive. In fact, the Instructables.com DIY Halloween Contest is open for entries until November 9, and there are over $7,000 worth of prizes up for grabs.
Check out our new gallery for some of the coolest entries so far, from the Chestburster to the Ghostbusters Proton Pack. Enter your own spooky creations; PopSci.com will be watching, and judging, so share your step-by-steps... or else...
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.