Uncertain

Sean M. Carroll, theoretical physicist at the California Institute of Technology talks with podcast host Steve Mirsky about his new book From Eternity to Here: The Quest for the Ultimate Theory of Time. Plus, we test your knowledge of some recent science in the news. Web sites related to this episode include preposterousuniverse.com

Jon Foley, director of the University of Minnesota's Institute on the Environment, talks with podcast host Steve Mirsky about his article in the April issue of Scientific American, "Boundaries for a Healthy Planet". Plus, we'll test your knowledge about some recent science in the news. Web sites related to this episode include snipurl.com/foleyplanet

Here are four science stories, but only three are true. See if you know which story is TOTALLY BOGUS

Scientific American staff editor Michael Moyer talks about his article "Fusion's False Dawn" in the March issue, and Editor in Chief Mariette DiChristina discusses the rest of the issue. Web sites related to this episode include www.sciamdigital.com; www.snipurl.com/mikefusion

Scientific American staffers Mark Fischetti and Robin Lloyd talk with podcast host Steve Mirsky about sessions they attended--including those about algae for energy, dissecting the astronomy in art, and attitudes about climate change--at the recent meeting of the American Association for the Advancement of Science. Plus, we'll test your knowledge about some recent science in the news. Web sites related to this episode include www.aaas.org, www.aven.com

Pulitzer Prize-winning journalist Deborah Blum talks about her new work, The Poisoner's Handbook, a look at how easy it used to be to kill someone with poison and the researchers who made poisoning much harder to get away with. Plus, we'll test your knowledge about some recent science in the news. Web sites related to this episode include blog.deborahblum.com

Mark Shegelski of the University of Northern British Columbia talks with podcast host Steve Mirsky about the physics of curling, currently taking its turn on the world stage at the Vancouver Olympics. (Shegelski is also the author of the new sci-fi collection "Remembering the Future.") Plus, we test your knowledge of some recent science in the news

Scientific American magazine Editor in Chief Mariette DiChristina talks with podcast host Steve Mirsky about some of the articles in the February issue, including one on the ecosystems that arise around the carcasses of whales that die and fall to the ocean floor; the warfare between our cells, our allied microbes and disease-causing organisms; and ways to improve the internal combustion engine

Renowned archaeologist Franck Goddio talks with podcast host Steve Mirsky about his efforts to recover artifacts from the ancient cities of Alexandria, Heracleion and Canopus, with special attention to discoveries related to Cleopatra and her reign. The exhibit Cleopatra: The Search for the Last Queen of Egypt opens at the Franklin Institute in Philadelphia on June 5th. Web sites related to this episode include www.underwaterdiscovery.org

Here are four science stories, but only three are true. See if you know which story is TOTALLY BOGUS

Science Talk correspondent John Pavlus talks with Jon Amiel, director of the new Darwin biography movie Creation, and with Randal Keynes, Darwin's great-great-grandson and one of the film's scriptwriters. Then we'll hear from a few of the exhibitors who spoke to ScientificAmerican.com's Larry Greenemeier at the recent Consumer Electronics Show in Las Vegas

Here are four science stories, but only three are true. See if you know which story is TOTALLY BOGUS.