Facts of Life
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A shark's bite can generate pressures of 2.5 tonnes/square cm. Swans have the most flexible necks, with up to 25 neck vertebrae.
The common swift is continuously airborne for years, usually only landing to nest young.
While researching plastics for gunsights in 1942, Harry Coover discovered superglue.
A spray of bullets is called a shower. Because sloths have one less neck vertebrae than us they struggle to turn their heads.
Squids travel by a form of jet propulsion. Careless spiders can get caught in their own webs.
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