Cats often rub up against people and furniture to lay their scent and mark their territory. They do it this way, as opposed to the way dogs do it, because they have scent glands in their faces.

It is believed that Ancient Egyptians used complex mathematics such as algebra, arithmetic and geometry as far back as 3000 BC.

In 1908, the first lollipop-making machine started in New Haven, CT.

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