Kermit the Frog was named after Kermit Scott, a childhood friend of creator Jim Henson, who became a professor of philosophy at Purdue University.

On April 4, 1974, John Massis of Belgium pulled two New York Long Island railroad passenger cars totaling 80 tons with a thick rope, with a small bit attached, using only his teeth.

The speed of sound must be exceeded to produce a sonic boom.

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