- An astronaut can be up to 2 inches taller returning from space (the cartilage disks in the spine expand in the absence of gravity).
- There are 31,536,000 seconds in a year.
- The Eiffel Tower has 1,792 steps.
- The Grand Canyon can hold around 900 trillion footballs.
- A cat uses its whiskers to determine if a space is too small to squeeze through.
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