People with glass desks shouldn’t use mice without a dusty old mousepad–that used to be the rule, at least. Logitech announced two new mice today that work on virtually any surface, even glass. The Performance Mouse MX ($100) and Anywhere Mouse MX ($80) use a new dual-laser technology called DarkField (said in an ominous Dark Knight voice, of course) to track your movements on the shiniest, clear surfaces. Can it be true?
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.