Uncertain

In this episode, theoretical physicist, cosmologist and astrobiologist Paul Davies ponders the question of whether life originated more than once on earth, and how to find examples of a second origin if it did. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.sciam.com/sciammag or tinyurl.com/3b8voo; www.beyond.asu.edu; www.sciam.com/sciambody; www.mayoclinic.com

In this episode, Siemens Competition in Math, Science & Technology solo winner Isha Himani Jain and team titlist Janelle Schlossberger (who shared the win with Amanda Marinoff) discuss their projects. And lead judge Joseph Taylor, winner of the Nobel Prize in physics, talks about the competition and his life and work. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.siemens-foundation.org

In this episode, neuroscientist Michael Gazzaniga talks about neuroscience's impact on legal practice, and The Law and Neuroscience Project, a new MacArthur Foundation effort, which he directs, to delineate the issues surrounding neuroscience and the law. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.lawandneuroscienceproject.org; www.tinyurl.com/292rq3

In this episode, University of Wisconsin-Madison cheese researcher Carol Chen explains the physics, chemistry and biology of cheese. And Scientific American's Christie Nicholson talks about our new web community. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.cdr.wisc.edu; www.cheese.com

In this episode, Scientific American's David Biello discusses his article on nuclear weaponry in the November issue of the magazine. And Scientific American Mind's Karen Schrock talks about some of the highlights of the Neuroscience 2007 conference that she attended last week in San Diego. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.sciam.com/sciammind; www.sfn.org

In this episode, University of Wisconsin-Madison public health expert Jonathan Patz talks about the ethical issues raised by climate change--who's causing it and who suffers most from it. Also, writer and producer Joseph McMaster talks about the upcoming episode of the PBS science program NOVA devoted to the 2005 Dover intelligent design trial. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.pbs.org/nova/id

In this episode, journalist Susan Warren, author of the new book Backyard Giants, talks about the art and science involved in the Quixotic quest to grow the world's biggest pumpkins. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: bigpumpkins.com; 60secondscience.com

In this episode, journalist Jessica Snyder Sachs, author of the new book Good Germs, Bad Germs: Health and Survival in a Bacterial World, talks about the complex relationships between you and the numerous single-celled critters that live on and in you. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: jessicasachs.com

In this episode, Scientific American news editor Phil Yam discusses how veterinarians, physicians and multinational food companies need to work together in the global fight against animal-borne infectious diseases; and University of Wisconsin evolutionary biologist Sean Carroll talks about recent research tracking the evolution of yeast genes with specific functions descended from a single, duplicated gene with multiple functions. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: tinyurl.com/2rb37v; tinyurl.com/2sj6bf; seanbcarroll.com

In this episode, Ig Nobel Prize maven Marc Abrahams discusses this year's crop of "winners." And we'll review the recipients of the 2007 real Nobel Prizes in science. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this podcast include: www.improbable.com; tinyurl.com/3bblmt; www.amnh.org; tinyurl.com/26z8wv

In this episode, Scientific American editors George Musser and Steven Ashley discuss the special section of the October issue devoted to the future of space exploration. Plus we'll test your knowledge of some recent science in the news.

In this episode, pyschologist Robert Epstein talks about his articles in the upcoming issue of Scientific American Mind, on being fooled by a chatterbot--a computer program designed to make you think you're communicating with a human--and on the spectrum of human sexuality. And he has some comments about the CBS TV program "Kid Nation." Plus we'll test your knowledge of some recent science in the news. Websites related to this episode include www.audible.com/sciencetalk; www.drepstein.com; www.sciammind.com; blog.sciam.com; www.news.wisc.edu/14162