This episode covers the 1997 Nobel Prize in Physiology or Medicine, which was awarded to Stanley B. Prusiner. The Nobel Assembly at the Karolinska Institute chose to give Prusiner the award “for his discovery of Prions - a new biological principle of infection”. Topics include the work Prusiner did to define prion diseases, the amazing molecular nature of how prion diseases spread, and mad cow disease.

This episode covers one half of the 1976 Nobel Prize in Physiology or Medicine, which was awarded to D. Carleton Gajdusek. The Nobel Assembly at the Karolinska Institute chose to give Gajdusek the award “for [his] discoveries concerning new mechanisms for the origin and dissemination of infectious diseases”. Topics include the Kuru neurodegenerative disease, the discovery of a new category of infectious diseases, and cannibalism.

This episode covers one half of the 1988 Nobel Prize in Physiology or Medicine, which was awarded to Gertrude B. Elion and George H. Hitchings. The Nobel Assembly at the Karolinska Institute chose to give Elion and Hitchings the award, “for their discoveries of important principles for drug treatment”. Topics include the discovery of the antiviral drug acyclovir, how acyclovir works to treat herpes simplex virus infections, and the rational approach to drug discovery.