- Blue whale tongues can weigh 8,000 pounds, or as much as an elephant, and their hearts weigh close to a ton.
- Before 1863 the postal service in the US was free.
- The D.C. in Washington D.C. stands for District of Columbia.
- The Hawaiian alphabet has 13 letters.
- Polar bears have black skin.
- Most dinosaurs lived to be more than 100 years old.
- A fly's reaction time is 30 milliseconds.
- Hippopotamuses are born under water.
- The tea bag was invented in 1908.
- Honey bees kill more people each year than snakes.
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