Although the Stegosaurus dinosaur was over 9 metres long, its brain was only the size of a walnut.

In 1998, a law passed in the U.S. state of Virginia allows drivers to keep their road kill, as long as they report it within 12 hours. updated.

The phrase "rule of thumb" is derived from an old English law whichstated that you couldn't beat your wife with anything wider than yourthumb.

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