Are they good swimmers? What are they doing with those gaping jaws? Why are there wild hippos in Colombia? What’s up with pygmy hippos? Actual real life Hippopotomologist Dr. Rebecca Lewison chats about pet hippos, subspecies, daily diets, poo helicopters, terrifying sunscreen, their role as ecosystem engineers, what’s up with their nostrils, and their surprising evolutionary cousins.

The what, where, and who of native plants! The wonderful ethnobotanist Leigh Joseph shares how she includes her Squamish First Nation community in her research and how we relate to plants – both native and invasive. She’ll chat about how to identify plants, how knowledge is passed down or silenced, the chilling history that inspired some of her work, uses for barks and berries and saps and teas, pharmaceuticals derived from Indigenous knowledge, the dos and do-nots of harvesting, skin remedies, and so much more.

RATS: They love pizza. They invade taquerias at midnight. They scurry. They cuddle. They outsmart. Proving that not just woodsy megafauna can be charismatic, rats have lives we would never suspect. Globally-lauded Urban Rodentologist Dr. Robert Corrigan, or Bobby if you like, has been studying these animals in their big-city ecosystem for decades and he is a wonder-filled joy. Learn about rats’ origin story, their chompers, their scaly tails, how they communicate, where they live, and what cuisines they prefer. Might as well start to love and respect them, because we’re not-too-distantly related and one day… they may be steering the ship.

Every day, your brain tries to save your life by being terrified. Thanks, brain! Also, calm the heck down, brain. Alie hunted down Dr. Mary Poffenroth, an expert in the biological and sociological causes/effects of fear and it is riveting. This real life FEAROLOGIST (which is a real word) talks about how the difference between stress and fear, what’s going on in our noggins and bods when we’re afraid (and what’s NOT going on), how to talk to your brain when it has needlessly pulled the fire alarm, why we sometimes like scary movies, why we’re afraid of the dark, and how likely it is that a snake will bite your butt.

They dance. They make songs. They will steal your heart. They are spiders. Jumping spiders, specifically, and impassioned spider scientist Dr. Sebastian Echeverri is on board to tell you all about their dances. How far can a jumping spider jump? What makes a good spider dancer? How do they learn their moves? Why are they so cute? Can you sample their drumming and make a sick industrial-EDM track that feels like you’re in a Berlin discotheque? Buckle up for the grooviest Spooktober of your life.

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OWLS. FINALLY. In no particular order: what’s up with their eyes, legs, hoots, nests, necks, barfs? Is it ok to hoot back at them? What do you mean one of their toes is reversible? Go take a walk or sit on a porch in the dusk and make friends with Rocky. Dr. R.J. “Rocky” Gutiérrez is a celebrated researcher, Professor Emeritus at the University of Minnesota, a legend in the owl world, and simply one of the loveliest ologists. He’ll take us on a trip next to a river, scrambling up some trees, over rocky terrain and through the forest to learn why owls are so magnetic. Yeah, I called owls the best bird. Not backing down.

Serotonin! Dopamine! Norepinephrine! Neurotransmitters: what's their deal? Dr. Crystal Dilworth, aka Dr. Brain, stops by to have a spirited discussion about how chemical messengers change our moods and behaviors. We chat about sleep, focus, happiness, depression, anxiety, what chemicals drive us to get off the couch, ADHD, the microbiome, and so much more of what goes into making our noggins work they way they do.

Dehydrated eggs. Airborne tortillas. Pouches of chicken. Tang. Work up an appetite for space food with artist, designer and Astrobromatologist, Maggie Coblentz. We talk micro-gardening in space, recycled water, dehydrated beef, velcro fatigue, the problem with crumbs in zero gravity, how to make barbecued wings in orbit, and what’s being done to make space food more delicious.

Fronds. Forest dwellers. Spores. Houseplants. Gametophytes? We’ve got ferns. The charming and hilarious professor, pteridologist and author of “Ferns: Lessons in Survival from Earth’s Most Adaptable Plants,” Dr. Fay-Wei Li, tells me all aboutwhat makes ferns such oddities in the plant world, fern evolution, why they have beef with flowering plants, tips for growing your own fern gully, whether they have roots or rhyzomes or friends, and how ferns could help cool down a warming planet or grow better crops. This episode is, in Fay-Wei’s words, “ferntastic.”