Botanically a rhubarb is a vegetable. It was changed to a fruit in 1947 by a U.S. Custom Court.

The size of a raindrop is around 0.5 mm - 2.5 mm, and they fall from the sky on average 21 feet per second.

In the early days of the telephone, operators would pick up a call and use the phrase, "Well, are you there?". It wasn't until 1895 that someone suggested answering the phone with the phrase "number please?".

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