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A British company is working on a new navigation system that doesn't rely on GPS satellites to track your location. BAE has created Navsop, a device that picks up errant cell phone, radio and television signals to deduce your coordinates, which means it can be used in locations where traditional GPS can't. For example, TV signals are substantially more powerful in buildings and below ground than GPS, which means Navsop could eventually help locate individuals in collapsed buildings or mines. It

Traffic lights using state-of-the-art LED illumination use 90 percent less electricity, offer a much longer service life and are more durable than their incandescent counterparts. Taking advantage of the countless benefits, cities around the country have been replacing traditional filament-based traffic signal bulbs with LEDs for years. Unfortunately, the low-watt LED units burn much cooler than its white-hot counterpart making it unable to melt snow off weather exposed traffic fixtures.

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