Does the moon hold the key to the earth’s energy needs?

The Guardian- 

Tidal power is the only renewable source derived from the moon. Now an extraordinary array of devices promise to unlock this vital energy potential. Using giant kites, blades and paddles, and mimicking pogo sticks, blowholes and even the human heart, groups around the world are on the cusp of harnessing the colossal power of the oceans.

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