Learn about why there’s no patent for the polio vaccine; a hypothesis that says a black hole would incinerate you; and what causes “Alexander’s band,” the dark strip of sky inside a double rainbow.

Please support our sponsors! Get two months of unlimited access to over 25,000 classes on Skillshare — for free. To sign up, go to skillshare.com/curiosity.

In this podcast, Cody Gough and Ashley Hamer discuss the following stories from Curiosity.com to help you get smarter and learn something new in just a few minutes:

Jonas Salk Didn't Patent His Polio Vaccine — https://curiosity.im/2HWBfm1

The Black Hole Firewall Hypothesis Says a Black Hole Would Incinerate You on the Spot — https://curiosity.im/2HZG65J

Alexander's Band Is the Dark Strip of Sky Inside a Double Rainbow — https://curiosity.im/2HWALMM

If you love our show and you're interested in hearing full-length interviews, then please consider supporting us on Patreon. You'll get exclusive episodes and access to our archives as soon as you become a Patron! https://www.patreon.com/curiositydotcom

Download the FREE 5-star Curiosity app for Android and iOS at https://curiosity.im/podcast-app. And Amazon smart speaker users: you can listen to our podcast as part of your Amazon Alexa Flash Briefing — just click “enable” here: https://curiosity.im/podcast-flash-briefing.

See omnystudio.com/listener for privacy information.