Last Week's Most Popular Stories

In case you weren't obsessively refreshing mentalfloss.com all week, here's what you missed:
1. Just a Penny! It’s a Steal! How Columbia House Made Money Giving Away Music, by Ethan Trex
*
2. Unsung Dads of the Animal Kingdom, by Kara Kovalchik
*
3. Whatever Happened to Hitler’s Body?, by Matt Soniak
*
4. How Many Ridges Are on a Quarter? (And Why Are They There in the First Place?), by Matt Soniak
*
5. Winnie Ille Pu: The Latin Versions of 10 Modern Stories, by Andréa Fernandes
*
6. Dear Photograph, by Ransom Riggs
*
7. Operation Barbarossa: The Biggest Military Adventure in History, by Erik Sass
*
8. The Worst First Pick in Basketball History, by Ethan Trex
*
9. 10 Funny and Fabulous Flowcharts, by Miss Cellania
*
10. Netflix Envelope Art, by Colin Perkins