The Museum of Unworkable Devices
Jippy_ writes "The quest for perpetual motion has been going on since at least the 11th century according to this site, and scientists have been getting it wrong ever since. Take a gander at some of the most valiant efforts (and ultimately the biggest failures) in trying to beat the laws of physics through the last 1000 years, along with other impossible inventions and devices."
When I was younger, in early high school, I discovered that my father was trying to build a perpetual motion machine in his basement workshop. It was a rotating wheel with slots that contained ball bearings. The idea was that the bearings would roll in the slots in such a way that the wheel would constantly be unbalanced, causing it to rotate forever. He hadn't quite gotten it to work, of course, and was concerned about the angle of the slots and friction at the hub. I had taken some physics by then, and tried to explain to my dad about conservation of energy and how his machine, in principle, could never work. Maybe he was already discouraged by then, but he quit working on it shortly after that.
Make a difference: move to a swing state.