This 23.6-inch display’s pixels change 120 times a second, twice as fast as most other monitors, which helps reduce blur in quickly moving action scenes. And when paired with a 3-D graphics card and glasses, it can also display 3-D games in full 1080p. Acer GD235HZ $400;acer.com
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.