Original release June 3, 2016.

Encore release December 15, 2018.

Encore release September 7, 2017.

Whoo-hoo! It's our 250th episode! We'll celebrate by continuing to put out some more episodes.

Meanwhile, we interview Mary Roach, whose latest book is Grunt: The Curious Science of Humans at War (available in hardcover, audiobook and for Kindle). Roach is the author of other insightful and humorous nonfiction titles like Stiff (an exploration of the ethical issues associated with the use of cadavers), Spook (at look at scientific evidence for the afterlife), Bonk (the study of human sexuality) and Gulp (eating and digestion). We last spoke to Mary waaay back in episode #99 about her book Packing for Mars: The Curious Science of Life in the Void. For more about Mary Roach and her work visit MaryRoach.net.

Plus:

Look for David Driscoll at the Reason Rally, June 4th at the Lincoln Memorial.