 Several experts contributed to the games design. Dr. James Palen,  M.D. of St. Francis Medical Center, Cape Girardeau, Mo., contributed  the medical algorithms. Professor John Kingsbury of Cornell  University provided information on toxic wild plants. Dr. Lanny  Miller of the Jet Propulsion Laboratory provided the thermal models.  Kimball Garrett of the Los Angeles County Museum of Natural History  provided information on wildlife habitats. Dr. Robert Wolff of the  Jet Propulsion Laboratory conducted database research.