Slinkys were invented by an airplane mechanic; he was playing with engine parts and realized the possible secondary use of one of the springs.

When Black Jack Ketchum was hung back in 1901 in Clayton New Mexico, the noose actually ended up taking his head off. The head had to be sewn back on so Black Jack could be buried properly.

The "silk" of a spider is stronger than steel threads of the same diameter.

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