- The surface area of your lungs is roughly the same size as a tennis court.
- Scissors were most likely invented ancient Egypt.
- Britain was the first country to use postage stamps.
- German mathematician Gottfried Leibniz lived between 1646 and 1716, developing important calculus concepts and mathematical notation practices..
- 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.
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