Completely Optional Knowledge

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Natural Sciences
**Completely Optional Knowledge**

The podcast where we answer the questions you never knew you had. Produced by Andrew Norton with music by Breakmaster Cylinder.

Latest Episodes:

An Update & Exciting News! Jan 02, 2018

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An update on the podcast and some exciting news. Spoiler - the exciting news is a new podcast. Subscribe Now

Why Do Frozen Lakes and Rivers Sound So Creepy? Dec 26, 2016

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Brigitta Green from the perennial winter wonderland of Minnesota has a fitting question for us about ice. After a mysterious, late night howling sound caused “mass slight curiosity” on the streets of St. Paul last winter, she wants to know how it is that a frozen body of water can produce such an eery noise. Chris Polashenski, Arctic researcher and expert on all things cold, has our answer.

What's The Coolest Species Name? Dec 13, 2016

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What's the coolest or weirdest official name for a species of plant or animal? And how do they get those funny sounding Latin names anyway?

Why Distinguish Between Fruits and Vegetables? Nov 29, 2016

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Is a watermelon a vegetable? Biologically it’s logical, but does the answer depend where you live?

Why Do Animals See Color Differently? Nov 15, 2016

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Zookeeper Rick asks why why animals see color differently? Dr. Jay Neitz of the University of Washington Department of Ophthalmology says there is more than one factor that accounts for how animals perceive color. Some plants and animals present vibrant colors we can’t even see and for reasons they don't want us to know.

Do Animals Have Rituals Around Death? Nov 01, 2016

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Listener Ross Wintle, driving past a cemetery near his home, wonders if animals other than humans have rituals around death? Barbara J King, professor emerita of anthropology at the College of William and Mary and the author of How Animals Grieve reports that when it comes to animals and death, you’ve gotta look at elephants. However there are also some interesting reports about magpies, red foxes and dolphins showing some interacting with the dead in their groups. Appropriately in a Day of the Dead episode, The Completely Optional Knowledge podcast helps us understanding that death is a bit more universal experience in the animal kingdom than just to humans.

Why Do We Laugh At Pain? Oct 18, 2016

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Listener Matthew Hollingshead, a skateboard enthusiast, asks why it’s so funny to watch people get hurt. We’re not necessarily talking about critical injuries, more like America’s Funniest Home Videos style failures, pain, and embarrassment. Caleb Warren, an Assistant Professor of Marketing at the University of Arizona helps us answer this question and feel a little better about finding joy in other people’s “hilarious misery”. If you like Completely Optional Knowledge, help support the show: greenpeace.org/usa/knowledge

Do Animals Have Eating Contests? Oct 04, 2016

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Hilah Johnson hosts a show about cooking (and, naturally, eating)and she came to us with a very on-brand question. Do animals have eating contests? We spoke to biologist Elise Huchard to get the answer. Check out Hilah's cooking show! Find her on Twitter @hilahcooking.

What's Quantum Teleportation? Sep 20, 2016

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Listening to Shohini Ghose talk about what would happen if a human reached light speed in Episode 16, Fred Papon of Australia wanted to know more about her research into quantum teleportation. Ghose reveals that teleportation has already happened, but don’t expect someone on the train with you to disappear after saying “Beam me up Scotty.”

How Do Animal Taste Buds Work? Sep 06, 2016

Show notes

Dallas College professor Patrick Moore, seeing his dog Abbey eating her own poo and swallowing dirty socks, wonders how animal tastebuds work. Danielle Reed, associate director of the Monell Chemical Senses Center, takes a break from feeding her cat Diet Coke to talk about the chemical properties of taste. Both cheese and sweaty socks smell like isovaleric acid. Dogs being omnivores unconstrained by the social cues that govern human behavior are going to go ahead and see if that sock is food. Host Andrew Norton would rather have listeners thinking about Mac and Cheese but he has his own taste issues. Maybe it’s in genetics?

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