1) The windshield wipers were invented by a woman named Mary Anderson in 1903.

2) The total length of your blood vessels can circle the Earth more than twice.

3) The world's oldest university, Al-Qarawiyyin, was founded in 859 AD and is located in Fez, Morocco.

4) The name "Bluetooth" comes from the 10th-century Danish king, Harald Bluetooth, who united Denmark and Norway.