When best-selling novelist Michael Crichton died in 2008, he left behind an unfinished techno-thriller called Micro, which nonfiction writer Richard Preston took on the job of finishing. The novel picks up the nanotechnology theme that Crichton first played with in his 2002 novel, Prey. Only this time, the story is set on the Hawaiian island of Oahu, where an entrepreneur named Vin Drake has set up a company that manipulates molecules in order to make tiny machines. When a