Ketchup Consistency Standards, Implanting Memories, People Inside of Sperm

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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Edited by Jason Lederman: www.twitter.com/Lederman

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