In 1693, the postage rate of a letter was determined by how much light went through the letter. The less the light went through the letter the more expensive the rate would be. This technique was referred to as candling.

In February 1878, the first telephone book was published in New Haven, Connecticut. The book was one page long and had fifty names in it.

You share your birthday with at least 9 million other people in the world.

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