Hektoen International

A Journal of Medical Humanities

Tag: David Green

  • Chemical origins of terrestrial biology

    David Green Chicago, Illinois, United States   Figure 1. A model for RNA found in a playground. A=adenine, C=cytosine, U=uracil, G=guanine As an undergraduate at the University of Pennsylvania in the 1950s, I attended a lecture by Harold C. Urey, a Nobel laureate. The subject of his lecture was the origin of life, and he…