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A New Wildfire Watchdog

Cars That Think

A much better way to conserve battery power would be to use none of it at all until the system actually had important data to transmit. The system would remain in an ultralow-power sleep mode, or even an open-circuit mode, with no current flowing, until the sensor itself detected an important signal.

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Coming Soon – The Electric City

Revenge of the Electric Car

Much of the attention on electric cars has been on the vehicles’ design, cost and performance. Battery-powered motors are more efficient than gasoline engines. Despite such skepticism, Washington is putting considerable money into the effort, including billions of dollars in loans to Ford, Nissan and Tesla Motors.