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Green Tech and Gadgets for Earth Day

Here are 15 of the coolest, weirdest, and most practical ecofriendly gizmos.

By Jared Newman   

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Cyber-Rain Sprinkler Controller

Cyber-Rain may sound like a sweet name for a video game, but it's actually a way for automatic-sprinkler owners to save water. The controller coordinates with a networked PC to check local forecasts, and adjusts sprinkler schedules based on precipitation, humidity, and temperature. How long the $400 device will take to pay for itself probably depends on the size of your yard.

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