A unique thermosolar power station in southern Spain can shrug off cloudy days: energy stored when the sun shines lets it produce electricity even during the night. (1:51)

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We have all heard of global warming, but have you heard about the "snowball earth"?

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The oceans and our atmosphere work together to form the Earth's climate. Throw humans into the mix and the debate begins. While the atmosphere quickly adjusts to our changes, the oceans are the world's great moderator.

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During photosynthesis plants absorb visible light, mainly through the pigment chlorophyll, and use its energy to convert carbon dioxide and water into sugars required for metabolism and growth.

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Although one may not think of a "cardboard" box as the latest invention, it may be what could 'save the world!

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