- 1 gigayear = 1,000,000,000,000 years.
- Dolphins can hear underwater sounds from 24km (15miles) away.
- Flies can react to an object it sees and change direction in less than 30 milliseconds.
- Every day 7% of the US eats at McDonalds.
- There are 2 chickens for every person.
- Mount Everest is 8.9km (5.5 miles) high.
- Polar bears have black skin.
- In zero gravity, a candle's flame may appear circular and blue.
- A newborn kangaroo is about 1 inch in tall.
- Dry ice transforms directly from being a solid to a gas.
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