The problem with forced-air heating is that as it gives (heat), it also takes away (humidity). The result: chapped lips, parched furniture, and lots of static electricity. So why not add moisture back at the source? The Humidifier Register replaces your floor-vent cover; fill it with water periodically and it sends moist warm air into the room when the furnace kicks in. Price: $15.
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Inside NASA's astronaut bootcamp and the grueling new training regimen for deep space. Plus, ten young geniuses shaking up science today, one writer's quest to analyze every man-made chemical in her body and more.
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