During the next two weeks, you can help build a map of global light pollution, assisting scientists and astronomers as they monitor the loss of virgin night skies. You just have to look at the stars and write down what you see — or, more likely, what you don’t see.
By Lauren Aaronson
Posted 09.02.2010 at 4:55 pm 46 Comments
Never mind that twisty compact fluorescent. The new energy-efficient way to light your home is with LEDs. An upcoming crop of bulbs draw 12 watts or less, edging out a typical fluorescent, and they have a more conventional shape, contain no mercury, and last at least 25,000 hours, three times as long.
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.