Comedian and host of the outstanding podcast Scattered Chris Garcia (@_chrisgarcia) joins Matt and Andy to discuss getting a little too much parental help with science fair projects, dolphins using tools, 3D printing inside the body and how burning coal 250 million years ago led to climate change. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access by visiting TheGreatCoursesPlus.com/probably

Comedian, swimmer and math major Matthew Broussard (@mondaypunday) joins Andy and Matt to talk about linear algebra, swimming, neanderthal DNA, DNA degradation, Alex Falcone's NASA career, ancient Irish one-percenters, twins marrying twins and twin paternity tests. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access by visiting TheGreatCoursesPlus.com/probably

Comedian Jake Johannsen (@Jakethis) of the podcast Jake This joins Andy and Matt to discuss an herbal would-be COVID-19 remedy out of Madagascar, why men and women experience alcohol differently, alcohol's lack of protection against COVID-19 and appearing on Dr. Katz.

Comedian and actor Dan Oster (@dernerster) joins Matt and a normally voiced Andy to discuss pantomime dwarves, a desert update, neutron stars showing their cores, a porn star and a toad-venom death, psychological pain treatments, tripping on nutmeg and Dan's A Podcast, But Evil. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access by visiting TheGreatCoursesPlus.com/probably

Friends of the show Sarah Morgan (@sarahlmorgan) and JJ Whitehead (@JJWhitesnake) return to talk with Matt and a strangely deep-voiced Andy about a USB stick to protect you from the evils of 5G, controlling monkey minds via ultrasound, a super-deep octopus and monkeys stealing coronavirus samples. This episode is brought to you by The Great Courses Plus, offering Probably Science listeners a free trial with unlimited access by visiting TheGreatCoursesPlus.com/probably

Comedian, actor and voice performer extraordinaire Carlos Alazraqui (@carlosalazraqui) joins Matt and Andy to talk about what you can learn from hundreds of skydiving jumps, mud flows on Mars, laughing gas from penguin poop, a worm that survived being frozen for 41,000 years and Carlos' new movie Witness Infection.

Comedian Kristin Key (@thekristinkey) joins Matt and Andy to talk about her new album Keeper of Feelings, the importance of moths, illicit surfing in bioluminescence, neon dolphins, Pluto's haze, SOFIA, thirsty koalas licking trees and rain caused by nuclear testing. This episode is brought to you by StartAPod, offering our listeners 50% off the first year of a monthly or annual subscription by visiting StartAPod.com/probably

Writer Scott Vrooman (@mescottvrooman) joins Matt and Andy to discuss watching rocket launches, Trident missile tests, what it actually takes to make a ventilator, murder hornets, how to give CPR, the psychological health of vegetarians and meat-eaters, girlfriends' effects on risk-taking and the new Quibi show Memory Hole. This episode is brought to you by The Great Courses Plus, offering our listeners a free trial by visiting TheGreatCoursesPlus.com/probably This episode is brought to you by StartAPod, offering our listeners 50% off the first year of a monthly or annual subscription by visiting StartAPod.com/probably

Erstwhile Probably Science cohost Jesse Case (@jessecase) of Jesse vs. Cancer fame returns (remotely) to discuss everyone's new living situations, what the old Bluebell house looks like now, Andy's neighbor's text, a new LIGO discovery, bird brain sizes, a black paint that somehow cools buildings and analyzing whether farts can spread coronavirus. This episode is brought to you by The Great Courses Plus, offering our listeners a free trial by visiting TheGreatCoursesPlus.com/probably This episode is brought to you by StartAPod, offering our listeners 50% off the first year of a monthly or annual subscription by visiting StartAPod.com/probably

Writer Sam Pasternack (@SamPasternack) of The Podcasternack joins Matt and Andy while riding his quarantine exercise bike to discuss the real toilet paper problem, bomb tests and whale shark ages, a VERY personalized toilet, an unexpected downside of planting trees, a Mercury mission that just got underway and a five-year time lapse of its path to Mercury orbit. 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