- Mercury and Venus are the only planets in our solar system with no moon.
- Due to gravitational effects you weigh is slightly less when the moon is directly overhead.
- You have over 600 muscles.
- Britain was the first country to use postage stamps.
- Jellyfish don't have a brain.
- The 'black box' that houses an airplanes voice recorder is actually orange so it can be more easily detected amid the debris of a plane crash.
- One is the only number with letters in reverse alphabetical order.
- A group of whales is called a pod.
- Chinese mathematics developed around the 11th century BC and included important concepts related to negative numbers, decimals, algebra and geometry.
- A horse's canter is a 3-beat gait. After the third beat all three legs are off the ground.
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