1) The ocean covers about 71% of the Earth's surface and contains roughly 97% of the planet's water.

2) A group of flamingos is called a "flamboyance."

3) The concept of gravity was famously described by Sir Isaac Newton after an apple fell on his head.

4) The first bank in the world, Banca Monte dei Paschi di Siena, was established in Italy in 1472 and is still in operation today.