1) DNA, the building block of life, can store incredible amounts of data. It is estimated that one gram of DNA could potentially store about 215 petabytes of data.

2) Cows have best friends and can become stressed if they are separated.

3) Norse mythology, originating from the Scandinavian region, features gods and mythical creatures like Odin, Thor, Loki, and Valkyries. It explores themes of heroism, destiny, and the battle between gods and giants, with intricate tales recorded in texts such as the Prose Edda and Poetic Edda.

4) The game of rugby originated at Rugby School in England and has since evolved into different versions, including Rugby Union and Rugby League.