Mental Floss

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iStock.com/Wojciech Kozielczyk

Asthma symptoms affect more than 25 million Americans, including 7 million children. But kids who grow up around animals are less likely to have an asthma diagnosis.

Michele Debczak
















iStock.com/TorriPhoto

When you need a particularly decadent treat, head to one of these chocolate shops (or their websites) to satisfy that sweet tooth. No holiday necessary.

Suzanne Raga
NASA

In 2004, the rover Opportunity landed on Mars. Originally intended to serve a mere 90-day mission, the rover instead beamed back scientific discoveries for more than a decade—and now its groundbreaking mission is over.

Erin McCarthy
iStock/fotolinchen

Saliva is more important than you think: You need spit to taste, chew, swallow, and digest everything you eat. Your spit even fights tooth decay and cavities.

Shaunacy Ferro








Hulton Archive/Getty Images

John Adams had a reputation for articulate jabs and razor-sharp put-downs at the expense of his rivals and allies alike. Here are a few of his best zingers.

Mark Mancini