They have been at if for decades, these two sleuths from Å·ÃÀ¿Ú±¬ÊÓƵ-Boulder, using their expertise in plant forensics to help investigators solve crimes, often murder. And now the pair, emeritus professors Jane Bock and David Norris, have teamed up on a new forensic plant science book expected to aid detectives, lawyers and judges around the world in better understanding and solving crimes.