- An arrow frog has enough poison to kill over 2,200 people.
- Frogs can't swallow with their eyes open.
- The atomic symbol for iron is Fe (the original name for iron was Ferric).
- Phantom rain are raindrops that never reach the ground.
- The number 1 cause of blindness in the US is diabetes.
- It is believed that Ancient Egyptians used complex mathematics such as algebra, arithmetic and geometry as far back as 3000 BC, such as equations to approximate the area of circles.
- Applesauce was the first food eaten in space by astronauts.
- A lemon contains more sugar than a strawberry.
- Crocodiles swallow rocks to help them dive deeper.
- Astronauts can't burp in space.
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