End Credits: Nils Hellstrom, M.S., Ph.D., is a fictional character who was portrayed by Lawrance Pressman. His statements relating to the impermanence of the human species have been synthesized from contemporary opinions. All statements about the insect world are factual and have been reviewed by Roy Snelling and Charles Hogue, Ph.D., of the Entomology Department, Los Angeles County Museum of Natural History.