- The supersonic Concorde jet made its first trial flight on January 1st 1969.
- Wind doesn't make a sound until it blows against an object.
- Hippopotamus milk is pink.
- Peru has more pyramids than Egypt.
- Humans share 50% of their DNA with bananas.
- The numerical digits we use today such as 1, 2 and 3 are based on the Hindu-Arabic numeral system developed over 1000 years ago.
- 60 cows can produce a ton of milk each day.
- The yoke of an Ostrich egg is the largest cell in the world.
- Flightless birds, like the penguin, could once fly.
- Your feet typically produce a pint of sweat every single day.
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