DNA computing

    The use of DNA molecules to encode
   computational problems.  Standard operations of molecular
   biology can then be used to solve some NP-hard search
   problems in parallel using a very large number of molecules.
   The exponential scaling of NP-hard problems still remains, so
   this method will require a huge amount of DNA to solve large
   problems.

   [L. M. Adleman, "Molecular Computation of Solutions to
   Combinatorial Problems", Science 266:1021-1024, 1994].

   (1997-02-11)