Darwin's Radio

Ancient diseases encoded in the DNA of humans wait like sleeping dragons to wake and infect again--or so molecular biologist Kaye Lang believes. And now it looks as if her controversial theory is in fact chilling reality. For Christopher Dicken, a "virus hunter" at the Epidemic Intelligence Service, has pursued an elusive flu-like disease that strikes down expectant mothers and their offspring. Then a major discovery high in the Alps --the preserved bodies of a prehistoric family--reveals a shocking link: something that has slept in our genes for millions of years is waking up.