Terry Gross

Dr. Paul Epstein is a physician in Boston, and the associate director of the Center for Health and the Global Environment at Harvard Medical School. He's created a niche as an eco-physician, exploring the link between increased illness and global warming. Illnesses such as heatstroke, asthma and allergies are the more obvious outcomes of a warmer and more polluted planet, but Epstein says an increase in infectious diseases such as malaria and West Nile virus may also be linked to the greenhouse effect.

Emmy Award winner Brian Cox will be appearing on the HBO series Deadwood this season. Cox has been in more than 100 films and TV shows over the past 40 years.

Attorney Richard Samp is the chief counsel for the Washington Legal Foundation, an organization that has been urging the U.S. Court of Appeals to dismiss challenges to detentions at Guantanamo. He has said, "Throughout our history, the courts have never allowed nonresident aliens to invoke the Constitution as a basis for challenging their detention by American authorities."