Alice Fraser (@aliterative, Tea With Alice, The Last Post) sits in as guest co-host for this chat with Comedy Store Players veteran and Whose Line Is It Anyway cast member Richard Vranch (@richardvranch), who more importantly for us is Dr. Richard Vranch, former physicist, for talk about the early days of UK comedy, and his experiments with silicon chips and radiation.

While on the road, Matt talks to Dr. Damian King about his work as the head of Neutral Beam Injection for the JET (Joint European Torus) at the Culham Centre for Fusion Energy and why heating things to 30 million degrees isn't nearly enough. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners three months of unlimited access for only $30 by visiting TheGreatCoursesPlus.com/probably

Comedians Kate Kennedy (@TheOGKennedy) and TJ Chambers (@tjchambersLA) join Andy to discuss physics for poets, Feynman memoirs, family trips and home movies, record-breaking geysers, blood waterfalls and freezing water at its boiling point. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access to thousands of lectures by visiting TheGreatCoursesPlus.com/probably

Writer/comedians TJ Chambers (@tjchambersLA) and Jordan Morris (@Jordan_Morris) return to the podcast to wrap up the decade that was the 2010s, covering things along the way including penis fish, the cat that says "well, hi!", the biggest scientific happenings of the decade, Karen Gillan's box office dominance, the book Orange World and the podcast Bubble.

Author of books, graphic novels and comics including DC's Batgirl Cecil Castellucci (@misscecil) joins Matt, Andy and her neuroscientist father Vincent to talk about her new graphic novel memoir Girl on Film, which intertwines the story of her life in the arts and schooling at Laguardia High School of the Performing Arts with sidebars on the neuroscience of memory and a look at Vincent's life's work in that field.

Comedian Louis Katz (@louiskatz) of the podcast Road Heads joins Andy and Matt to discuss robot deliveries, semen shocks (and overly detailed pictures), honking dinosaurs, the Jurassic Park melodica cover, plants making noises, Mort Garson's music for plants, Brazil's museum that burned down, browncardigan.com, a robot space hotel and who's in space right now.

Comedian and game show-hosting veteran Bil Dwyer (@BilDwyer) returns to the podcast 7 1/2 years after his last appearance to talk about Dirty Rotten Cheater, more reasons to hate paper straws, the greatest prank call ever, BLEVEs, frozen dogs, shrinking birds, tattooed mummies, audiophile coral reefs and a possible fifth force of nature.

Matthew D. LaPlante (@mdlaplante), author of the new book Superlative: The Biology of Extremes, joins Matt and Andy to talk about all creatures great and small (and fast and slow and strong and old and deadly...) and look at the many surprising things to be learned from nature's outliers.

Comedian/writer/podcaster Chris Mancini (@chrisjmancini) of Comedy Film Nerds joins Andy and Matt to talk about the good Kickstarter for his graphic novel Rise of the Kung Fu Dragon Master (and a less-good one for this dumb wine thing), what the deal with Pez is, toilet stickiness, Ohio religion laws, L’Hopital’s rule, supernova blobs, pigeon bones, antibiotics resistance and why you may not have to finish taking all of yours, pig organs, tonight's northern lights, Andy's Guilty Treasure show tomorrow, suspended animation and Michael Moschen’s Labyrinth juggling. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access to thousands of lectures by visiting TheGreatCoursesPlus.com/probably

Comedian Noah Gardenswartz (@noahgcomedy) of The Marvelous Mrs. Maisel joins Andy and Matt to discuss left-handed women’s smell, cannibal ants, cg mustaches, an ebola vaccine, anti-vax Facebook ads, mouse deer and Mars air. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access to thousands of lectures by visiting TheGreatCoursesPlus.com/probably