Scientist are saying that cubic boron arsenide has a higher thermal conductivity than diamond. Ummm, while that is cool and all, let's just hope it is cheaper than diamonds. 
A team of theoretical physicists at the U.S. Naval Research Laboratory (NRL) and Boston College has identified cubic boron arsenide as a material with an extraordinarily high thermal conductivity and the potential to transfer heat more effectively from electronic devices than diamond, the best-known thermal conductor to date.
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