By Dave ProchnowPosted 12.17.2007 at 4:10 pm0 Comments
The folks over at Lifehacker have a weekend project involving, 8 LEDs, a 9V battery, and a Ryobi fan. The result from this DIYer-lovers mix is a spinning electric “death” wreath. Moo-ha-ha; oops, wrong holiday. Happy holidays.—Dave Prochnow
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.