Dinosaurs ruled the Earth for over 160 million years, from the Triassic period around 230 million years ago through the Jurassic period and until the end of the Cretaceous period around 65 million years ago.

The first tattoo machine was invented by Samuel O'Reilly. He did this by using equipment that Thomas Edison used to engrave hard surfaces.

Termites work 24 hours per day -- they do not sleep.

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