Science Series: The Human Genome

As part of Charlie's continuing science series, Sir Paul Nurse, president of Rockefeller University, and Dr. James Watson, who won the Nobel Prize for mapping the human genome, discuss human DNA. Biologist Eric Lander explains how mapping the human genome has allowed us insight into the genetic mechanisms underlying different cancers. Geneticist Craig Venter, who has mapped his personal genome, discusses what he learned and how the interplay of environmental factors and genetics affects the risks of certain diseases.