Leonardo da Vinci could write with one hand and draw with the other at the same time.
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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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In 2011, a couple bought a box of textbooks for $10. Inside, they found a 25-cent bill signed by the president of the Republic of Texas, Sam Houston, and subsequently sold it for $63,250.
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The rarest motorcycle in the world was found behind a brick wall in Chicago and has engine technologies well ahead of its time. The “Traub” is still running to this day.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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