But one of the biggest breakthroughs in clean energy was actually in solar power, as designers at Rawlemon created a spherical, sun-tracking glass globe that's able to concentrate sunlight (and moonlight) up to 10, 000 times.

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We've been tracking the sun-powered plane known as Solar Impulse for years as it roved hither and yon.

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Every two minutes its 220, 000 giant glass mirrors, lined up in perfect rows, rotate imperceptibly with a barely audible click, tracking the sun's path across the sky.

FORBES: Magazine Article

Sunengy has developed a liquid solar concentrated solar array that will float on the reservoir, tracking the sun to maximize energy input while using the water to keep its silicon cool.

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Without expensive and difficult-to-maintain tracking systems, there is no way for flat panels to continuously face the sun.

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