Over at South by Southwest, OpenPool is showing off these pool tables, which use a Kinect to track the movement of the billiard balls and a projector to overlay trippy shapes following how the balls move. Looks neat! Even better, it's open-sourced, so users can upload their own spins on the project and share them around. Might not be as important an effort as, say, saving rare rock art or talking to a doctor, but the Kinect is nothing if not versatile.
We also caught sight of this cool tracking system that points a laser down the barrel of your cue to calculate its geometry. Maybe we can turn out the lights and try out both.
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.