Ranked #1
Do Animals in the Wild Get Drunk?
Do Animals in the Wild Get Drunk?
If you give a mouse a vodka tonic, will he even drink it? That’s the question Ben Harrison — host of the Let’s Drink Abo... Read more
1 Mar 2016
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8mins
Ranked #2
What Is Wind?
What Is Wind?
Lauren Ober is the host of WAMU's The Big Listen. She wanted to know the answer to a relatively simple question - what i... Read more
12 Jul 2016
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12mins
Ranked #3
How Do You Take Great Photos From Space?
How Do You Take Great Photos From Space?
Jonathan Mehring has photographed all over the world, but there’s one place he hasn’t been yet that he’s dying to learn ... Read more
28 Jun 2016
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11mins
Ranked #4
What If I Went Light Speed?
What If I Went Light Speed?
Tom Sortodden wants to know what would happen if he went the speed of light. Physicist Shohini Ghose of Wilfrid Laurier ... Read more
19 Apr 2016
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8mins
Most Popular Podcasts
The Joe Rogan Experience
TED Talks Daily
The Tim Ferriss Show
The Daily
Stuff You Should Know
Oprah's SuperSoul Conversations
Armchair Expert with Dax Shepard
Ranked #5
Have Whale Songs Changed Over Time?
Have Whale Songs Changed Over Time?
Music critic Stacey Anderson has listened to a lot of songs in her time. So many, in fact, that she’s grown a bit bored ... Read more
15 Mar 2016
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8mins
Ranked #6
What Animal Has the Stinkiest Farts?
What Animal Has the Stinkiest Farts?
Award-winning filmmaker Troy Hale comes to Completely Optional Knowledge to find out which animal has the smelliest fart... Read more
5 Apr 2016
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8mins
Ranked #7
How Do Animals Choose Their Leaders?
How Do Animals Choose Their Leaders?
Election season is upon us, and that means choices. If you’re still on the fence about who to vote for, maybe you’d like... Read more
2 Feb 2016
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8mins
Ranked #8
What Sounds Can't I Hear?
What Sounds Can't I Hear?
Annie McEwen has great hearing — but she's still only human — so she's wondering what sounds are out there that she's no... Read more
22 Mar 2016
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9mins
Ranked #9
Who Governs Space?
Who Governs Space?
Who makes the rules in outer space? That’s what Completely Optional Knowledge listener Tim Burberich called in to find o... Read more
31 May 2016
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10mins
Ranked #10
How Long Can You Live Underwater?
How Long Can You Live Underwater?
Swimmer Veronica Simmonds wants to know what happens when you take aquatic adventure to the extreme. So we called up ‘aq... Read more
5 Jan 2016
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8mins
Ranked #11
Why Do Siblings Have Rivalries?
Why Do Siblings Have Rivalries?
Molly and John Knefel, sister and brother co-hosts of the daily podcast “Radio Dispatch” wonder why siblings become riva... Read more
23 Aug 2016
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10mins
Ranked #12
What Does the Sun Sound Like?
What Does the Sun Sound Like?
Space camp alumnus Avery Trufelman from Oakland, California wants to know what the sun sounds like, and so do we! NASA s... Read more
12 Sep 2015
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7mins
Ranked #13
What Is the Fastest Insect in the World?
What Is the Fastest Insect in the World?
Listener Stephen Rang wants to know how fast he would have to run (or drive, as it turns out) to flee the world’s fastes... Read more
16 Feb 2016
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9mins
Ranked #14
What's the Most Surprising Partnership Between Species?
What's the Most Surprising Partnership Between Species?
Emily Schorr Lesnick is the co-host of the SoulGlo podcast, a show about how diversity helps humans thrive. Naturally, s... Read more
17 May 2016
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11mins
Ranked #15
Can Music Make You Hungry?
Can Music Make You Hungry?
Breakmaster Cylinder, creator of the Completely Optional Knowledge theme music, wonders if music can be used to trigger ... Read more
26 Jul 2016
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12mins
