Nice article on reversible computing

The Fantastical Promise of Reversible Computing Reversible logic could cut the energy wasted by computers to zero. But significant challenges lie ahead. The world of computing is in transition. As chips become smaller and faster, they dissipate more heat, which is energy that is entirely wasted. By some estimates the difference between the amount of energy required to carry out a computation and the amount that today’s computers actually use, is some eight orders of magnitude. Clearly, there is room for improvement. -link

Article commenting on reversible computing a form of computing that could allow for ultra energy efficient computation.