The space race didn't end with NASA astronauts walking on the moon in 1969. Historian Asif Siddiqi says that today, new space powers like China and India are entering the fray. Podcast produced by David Levin. Interview by Rima Chaddha. Funding for NOVA is provided by David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. To learn more about the the space race during the Cold War, visit our Web site at http://www.pbs.org/nova/astrospies

Art historian Jeffrey Hurwit of the University of Oregon takes us back in time for a glimpse of what the Parthenon would have looked like to an ancient Athenian in the 5th century B.C. To learn more about the Parthenon and current efforts to restore its ruins, visit http://www.pbs.org/nova/parthenon Interview by Gary Glassman. Podcast produced by Susan K. Lewis. Music by Michael Potvin. Watch NOVA every Tuesday night on PBS. Or join us online at http://www.pbs.org/nova "Secrets of the Parthenon" is a Providence Pictures production for NOVA and WGBH Boston in association with Studio International and ARTE France. Funding for NOVA is provided by David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. Additional funding for "Secrets of the Parthenon" is provided by The Solow Art and Architecture Foundation.

Dr. Alfredo Quinones-Hinojosa is a neurosurgeon and cancer researcher at Johns Hopkins School of Medicine in Baltimore, MD. In this podcast, hear the remarkable story of his career, which began as a migrant farm worker in southern California. Podcast produced by David Levin. Interview by Robe Imbriano. Major funding for NOVA is provided by the Corporation for Public Broadcasting, and public television viewers. Major funding for NOVA scienceNOW is provided by the National Science Foundation and the Howard Hughes Medical Institute. Additional funding is provided by the Alfred P. Sloan Foundation. For more scientist profiles, visit our Web site at http://www.pbs.org/nova/sciencenow

Simon Schaffer is a historian of science at the University of Cambridge, England. In this podcast, he discusses the search for absolute zero and its impact on science and technology. Podcast produced by David Levin. Interview by David Dugan. Funding for NOVA is provided by David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. To learn more about the race to conquer cold, visit our Web site at http://pbs.org/nova/zero

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