Malcolm Potts is the Bixby Professor at
  the University of California, Berkeley. A
  graduate of Cambridge University and trained
  as an obstetrician and research biologist, his profession has taken him all over the world. Potts led a medical team into Bangladesh immediately after the War of Liberation in 1972, and has worked in many other war-torn places including Vietnam and Cambodia, Afghanistan, Egypt, the Gaza Strip, Liberia and Angola. His most recent books are Queen Victoria’s Gene and Ever Since Adam and Eve: The Evolution of Human Sexuality.

  Thomas Hayden is a science journalist and a
  Lecturer in the School of Earth Sciences at
  Stanford University. A former staff writer at
  Newsweek and U.S. News & World Report, his articles and reviews have appeared in more than twenty publications, including National Geographic, Nature, The Washington Post and The Globe and Mail. He is also the co-author of On Call in Hell: A Doctor’s Iraq War Story, a 2007 U.S. bestseller. Originally from Saskatoon, Saskatchewan, he lives in San Francisco.
Photos by Peg Skorpinski (Potts) and Trish Tunney (Hayden)