The weirdest things we learned this week range from the standards and grading of ketchup to the idea that people were fully-formed inside of sperm before being born. Whose story will be voted "The Weirdest Thing I Learned This Week"?

The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us on Twitter: www.twitter.com/weirdest_thing #weirdestthingpod

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Theme Music by Billy Cadden: www.twitter.com/billycadden
Edited by Jason Lederman: www.twitter.com/Lederman

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