Solar cells that don't use the sun but only heat.

The Massachusetts Institution of Technology (MIT) have recently been conducting experiments on how to use everyday heat lost from electronics to reusable energy. How does this work?  Like current solar powers systems, we use radiation molecules that move very fast and they excite the atoms in a semiconductor structure, then pushes the electrons out and creating a generation current.  This type of Technology is pretty amazing, if we can some how harness most, but not all of wasted heat that our daily electronics or from the heat from our water heaters, we could end the worlds energy crisis. It sounds to good to be true, because there is always a profit to be made when it comes to cheap energy source.

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http://www.msnbc.msn.com/id/43989608/ns/technology_and_science-future_of_technology/