What facts are uncommon and rarely shared?

 

• The Jews were expelled from Spain in 1400. No Jewish children were born again in Spain until 1966.
• If you lie down and chew on anything small (like gum), the gum can not only cause you to choke, but if you dislodge it from your throat forcefully enough, it can end up in your nasal cavity. Just as milk can come out of your nose, other small objects can enter;
• Grown pieces of brain matter always try to grow an eye;
• Isaac Newton predicted that the world would end in 2060;
• When you cook something in boiling water, you always cook it at the boiling point of water, no matter how long it's been there. Once the water starts boiling, any additional heat you apply goes towards converting the water into steam. You can't really make it hotter. The hotter you make the heat, the faster it boils, but liquid water never gets above 212°F at sea level.