Last Week’s Most Popular Stories

In case you weren’t obsessively refreshing mentalfloss.com all week, here’s what you missed.

1. 5 Olympians Who Sold Their Gold Medals
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2. 11 Geeky Wedding and Engagement Rings
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3. 4 Times Olympians Refused Their Medals
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4. 11 of the Craziest Events in Olympic History
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5. The Science of “Breaking the Seal”
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6. 10 Lost Treasures That Could Make You Very Rich
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7. Does Wedding Rice Really Make Birds Explode?
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8. A Physics Lesson: Why Cats Land on Their Feet (Usually)
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9. 6 Olympians Who Don’t Keep Their Medals in a Sock Drawer
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10. 5 Fictional Countries Where the U.S. Army is Trained to Fight
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11. Remembering Reebok’s “Dan and Dave” Campaign 20 Years Later
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12. A Brief History of Olympic Defectors
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13. 13 Brazen Harry Potter Knock-Offs From Around the World
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14. The View From the End of the Great Wall of China