Though the celebrated and the famous have long used the glare of the spotlight to highlight personal causes, rarely has fame been used to such staggering effect as by Jenny McCarthy. Since 2007, this former Playboy model now turned autism activist has advocated for parents to stop vaccinating their children against deadly diseases. This week on Skepticality, Swoopy talks with Derek Bartholomaus, creator of “The Jenny McCarthy Body Count” website. This chilling and controversial site utilizes data from the Centers for Disease Control (CDC) to keep a running tally of illnesses and deaths from vaccine preventable diseases - a sobering reminder of the human cost of anti-vaccination rhetoric. On a lighter note, Derek & Swoopy also talk with Junior Skeptic Editor Daniel Loxton about the launch of the “Skeptics Mix Tape” project. This eclectic collection of songs of science and skepticism are available as free MP3s from Skeptic.com.

Mass extinctions, rising temperatures, and changing glaciers may sound like current events, but Earth scientists are learning that this type of climate change is nothing new.   This week on Skepticality, Swoopy talks with Dr. Donald R. Prothero about his new book Greenhouse of the Dinosaurs: Evolution, Extinction, and the Future of Our Planet. Prothero discusses the links between the climate changes that have occurred over the past 200 million years.   Dr. Prothero also discusses "Ida," a 47-million year old fossil the media is hailing as yet another "missing link." Is Ida all she is hyped up to be — or is this Darwinius masillae just one more transitional fossil supporting the theory of evolution?