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Glass globe harvests energy from the sun and the moon

From a glass globe that harvests energy from the sun and the moon to a car built of Lego blocks, here are our favorite tech pieces from the week.
German architect André Broessel, of Rawlemon, has looked into his crystal ball and seen the future of renewable energy. In this case it's a spherical sun-tracking solar energy-generating globe -- essentially a giant glass marble on a robotic steel frame. But this marble is no toy. It concentrates both sunlight and moonlight up to 10,000 times -- making its solar harvesting capabilities 35 percent more efficient than conventional dual-axis photovoltaic designs.Rawlemon was a finalist in the World Technology Network Award 2013 with the globe's design and afterward produced this latest version, called Betaray, which can concentrate diffuse light such as that from a cloudy day.

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