Dr. Rebecca Brachman tells us about her groundbreaking work in the neuroscience of resilience and how certain chemical compounds may be able to help prevent illnesses like depression or PTSD. This episode features comedians Wyatt Cenac, Maeve Higgins, and Negin Farsad. Hosted by Chris Duffy. Produced by Pretty Good Friends. NOTE: This is our last episode in the season.

NASA business expert Jennifer Lopez works with the International Space Station. Comedians Jo Firestone, Bowen Yang, and Josh Sharp get to the bottom of why her work matters, what's happening in space, and who's the best J.Lo. This episode was recorded in front of a live audience at National Geographic in Washington, DC. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Bianca Jones Marlin is a Columbia neuroscientist who studies maternal bonding and how trauma in parents affects the brains of future offspring. She teaches comedians Josh Gondelman, Ashley Brooke Roberts, and Dylan Marron about what you get from your parents and why. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Jess Phoenix studies volcanoes all over the world. She also runs a nonprofit and was a candidate for Congress. In this episode, she explains magma, lava, and all her other hot facts to panelists Aparna Nancherla, Max Silvestri, and Caitlin Durante. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Robin Nagle is the anthropologist-in-residence for New York City's Department of Sanitation and a professor at NYU. She walks us through the crucial and often overlooked role sanitation workers play in the city and talks trash with comedians Maeve Higgins, Gary Richardson, and Dylan Marron. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Brooke Flammang studies sharks and the fish that stick onto them. She discovered a previously undiscovered muscle in shark tails, builds autonomous underwater robots, and fires off lasers in her lab. She's incredible. Comedians Dillon Stevenson, Maeve Higgins, and Emmy Blotnick learn all about her work. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Helen Fisher, Biological Anthropologist, is a Senior Research Fellow at The Kinsey Institute, a member of the Center for Human Evolutionary Studies at Rutgers, and the Chief Scientific Advisor to the Internet dating site Match.com. Comedians Bowen Yang, Michelle Buteau, and Matt Koff learn about her research on why humans love, marry, cheat, and more. Hosted by Chris Duffy. Produced by Pretty Good Friends.

MIT's Dr. Rosalind "Roz" Picard helped invent the field of wearable computers. Now she's working on getting them to understand our emotions. Comedians Ken Reid, Josh Sharp, and Fareeha Khan learn about her research and get into their feelings in this special Cambridge Science Festival taping. Hosted by Chris Duffy. Produced by Pretty Good Friends. Made possible by generous funding from MIT's De Florez Fund for Humor.

Lauren Nolfo-Clements studies invasive species. In particular, she's an expert on nutria, giant swamp rodents. Host Chris Duffy and comedians Josh Sharp, Ken Reid, and Caitlin Durante learn about these rodents of unusual size and the science of introduced species. Recorded live at Suffolk University's Modern Theatre as part of the Cambridge Science Festival. Made possible with generous funding from MIT's DeFlorez Fund for Humor. Produced by Pretty Good Friends.

Dr. Christine McCarthy is an "ice squeezer" at Columbia University's Lamont-Doherty Earth Observatory. She studies space ice on moons and other planets and glaciers here on Earth. In this episode, she tells comedians Gary Richardson (SNL), Ashley Brooke Roberts (NatGeo), and Nadia Pinder about her research and findings. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Anand Varma is a National Geographic Photographer and biologist who uses pioneering techniques to capture images of everything from parasites that control the mind of an insect to hummingbirds to bees licking each other. He explains his work to comedians Jo Firestone, Scott Adsit, and Kasha Patel. Hosted by Chris Duffy. Produced by Pretty Good Friends. This episode was recorded in front of a live audience at National Geographic in DC.

Dr. Jennifer Basil studies memory and navigation across a variety of animals. But her main study subject is the Chambered Nautilus, a beautiful and mysterious creature of the deep. Listen as comedians Jo Firestone, Zhubin Parang, and Shalewa Sharpe discover what a nautilus is, why it matters, and why it's really pretty gross to eat a lobster. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Christine Austin uses teeth to study childhood development, exposure to chemicals, and stress. She teaches comedians Todd Barry, Michelle Buteau, and Negin Farsad about the secret rings hidden in our molars, why you don't want to inhale tooth dust, and how tooth analysis might hold the answers to some of our most frustratingly persistent diseases. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Alicia Perez-Porro is an expert on sea sponges. Are they the oldest living creatures? Are they constantly filtering our oceans? Should you use them to clean yourself in the shower? Comedians Josh Gondelman, Maeve Higgins, and Gary Richardson find out those answers and more. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Tal Rabin is the head of the Cryptography Research Group at the IBM T.J. Watson Research Center. She's an expert on secure cryptographic algorithms. In this episode, she teaches comedians John Hodgman, Josh Sharp, and Shalewa Sharpe about how cryptography works, what a bitcoin really is, and the best recipe for tiramisu. Hosted and created by Chris Duffy. Produced by Pretty Good Friends.

Astrophysicist Jackie Faherty studies the celestial bodies known as Brown Dwarfs. Our panelists Aparna Nancherla, Ashley Brooke Roberts, and Zhubin Parang discover what a brown dwarf is, how clouds are being detected in space, and what Jackie wants every baby to be named. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Danielle Lee got into science hoping to study something sexy, but ended up studying rats. She tells comedians Aparna Nancherla, Maeve Higgins, and Baratunde Thurston about her journey and the incredible things she's learned about rodents. Hosted by Chris Duffy. Produced by Pretty Good Friends.This episode was recorded at National Geographic in DC as part of the Bentzen Ball.

NYU's Dr. Shara Bailey studies what human teeth can tell us about our past. How does the shape of your molar reveal your family history? And what is the tooth-based link between North America and East Asia? Shara tells comedians Jo Firestone, Charlie Hankin, and Shalewa Sharpe all that and more. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Live from Second City in Toronto, Dr. Suzanne MacDonald tells us what it's like to be the world's leading expert on raccoon intelligence. Can you build a raccoon-proof trash can? Why does one man have fifty raccoons in his backyard? And how can they affect a gubernatorial race? This show features panelists Sasheer Zamata, Todd Barry, and Courtney Gilmour. Hosted by Chris Duffy. Recorded at the 2017 Just For Laughs Comedy Festival in Toronto. Produced by Pretty Good Friends.

Dr. Cora MacBeth studies green chemistry at Emory University. She teaches comedians Chuck Bryant (from Stuff You Should Know), Josh Sharp, and Shalewa Sharpe about how to manufacture chemicals without destroying the planet and why you've got brown bottles under your sink. Recorded in front of a live audience at the Atlanta Science Festival. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Recorded live at the Maine Science Festival, Dr. Kristy Townsend is a neurobiologist who studies the effects of diet on the brain. She teaches Roy Wood Jr, Michelle Buteau, and Charlie Hankin about brown fat, how the brain coordinates energy balance, and why she hates cleanses. Hosted by Chris Duffy. Produced by Pretty Good Friends.

Dr. Sara Ruane tells us all about the new species she discovered, the Ghost Snake, and what life is like as a snake scientist. Should you suck the venom out of a snakebite? Should you ride in a car with a herpetologist? The answer to both questions is: no. Featuring panelists Michael Showalter, Roy Wood Jr, and Sarah Kay. Hosted by Chris Duffy. Produced by Pretty Good Friends.