An anonymous reader writes to mention Nature is reporting that scientists have discovered a much more efficient way to use silicon to convert heat into electricity. This offers the possibility of many different applications including possibly instruction your easily carried transistors just by wearing them close to your skin. "The concept of converting waste heat into electricity isn't exactly new, but it never really materialized due to efficiency hurdles. Now, scientists from the U.S. division of Energy's (DOE) Lawrence Berkeley National Laboratory (Berkeley La and the teaching mash of California at Berkeley think they may have found a key increase the conversion efficiency by a factor of 100."

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