Uncertain

In this special stand-alone edition, see if you know which of four science news stories is Totally Bogus.

Award-winning science journalist Robin Marantz Henig and podcast host Steve Mirsky discuss Robin's article in the September issue about organ donation and definitions of death. Plus, we test your knowledge about some recent science in the news. Web sites related to this episode include http://bit.ly/ctIDsx; http://bit.ly/9Us1lE

Scientific American staff editor George Musser joins podcast host Steve Mirsky to discuss his article in the September issue about the possibility of time itself coming to an end

Editor in Chief Mariette DiChristina and issue editor Michael Moyer talk with podcast host Steve Mirsky about the September single-topic issue of Scientific American--endings in science. Plus, we test your knowledge of some recent science in the news

Jeff Potter, author of Cooking for Geeks: Real Science, Great Hacks and Good Food, talks with daily podcast correspondent Cynthia Graber, and podcast host Steve Mirsky tests your knowledge of some recent science in the news. Web sites related to content of this podcast include www.cookingforgeeks.com

Podcast host Steve Mirsky talks with author Mary Roach about her new book "Packing For Mars: The Curious Science of Life in the Void." Part 2 of 2. (Part 1 is at http://www.scientificamerican.com/podcast/episode.cfm?id=mary-roach-is-packing-for-mars-10-08-20). Web sites related to content of this podcast include www.maryroach.net.

Podcast host Steve Mirsky recently attended a talk by author Mary Roach about her new book Packing for Mars: The Curious Science of Life in the Void. In part 1 of this two-part episode, we'll hear that talk. Web sites related to content of this podcast include www.maryroach.net

Podcast host Steve Mirsky talks with human evolution expert Kate Wong about the small group of humans who survived tough times beginning about 195,000 years ago and gave rise to all of us, a story told in the cover article of the August issue of Scientific American, our 165th anniversary edition. And Editor in Chief Mariette DiChristina talks about the rest of the contents of the issue, including our coverage of the search for rocky exoplanets. Plus, we test your knowledge about some recent science in the news. Web sites related to content of this podcast include http://snipurl.com/10louu

A panel discussion on arguing with non-skeptics at the recent Northeast Conference on Science and Skepticism in New York City featured James Randi, George Hrab, D. J. Grothe and podcast host Steve Mirsky. Julia Galef moderated. Part 2 of 2. Web sites related to content of this podcast include www.necsscon.org

A panel discussion on arguing with non-skeptics at the recent Northeast Conference on Science and Skepticism in New York City featured James Randi, George Hrab, D. J. Grothe and podcast host Steve Mirsky. Julia Galef moderated. Part 1 of 2. Web sites related to content of this podcast include www.nature.com/nature/podcast and www.necsscon.org

The new documentary film Whiz Kids follows three high school student-scientists as they attempt to get their projects accepted into the prestigious Intel Science Talent Search. Scientific American podcast host Steve Mirsky talks with the film's writer and editor, Jane Wagner, and with two of the stars of the documentary, Ana Cisneros and Hermain Khan. Plus, we'll test your knowledge about some recent science in the news. Web sites related to content of this podcast include www.nature.com/nature/podcast and http://whizkidsmovie.com

Scientific American Editor in Chief Mariette DiChristina and staff editor Michael Moyer join podcast host Steve Mirsky to talk about articles in the July issue, including: "The Dirty Truth about Plug-In Hybrids"; "How Babies Think"; and "Birds That Lived with Dinosaurs". Plus, we'll test your knowledge about some recent science in the news. Web sites related to content of this podcast include www.scientificamerican.com/sciammag; http://bit.ly/cwcTtR