1) In Norse mythology, the Valkyries are divine maidens who serve Odin, the chief god. They are responsible for selecting warriors worthy of entering Valhalla and escorting them to the afterlife. They are often depicted as powerful and beautiful figures, riding winged horses and wielding spears.

2) Sloths only poop once a week, and when they do, they lose about one-third of their body weight.

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

4) The word "island" contains two vowels: I and A.