A Japanese physics team have turned theory into reality and, more importantly, information into energy.   By applying an electric field to a lattice of tiny plastic beads, they were able to extract more work from their experiment than they put into the apparatus.

It looks like that old Maxwell's Demon just got chased a little further into one side of the room.

Science 2.0 fave Dan Vergano has the story at USA Today.

If you want to open and close the green door yourself and move some molecules around, go here.