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

2) The FIFA World Cup is the most-watched sporting event globally, with billions of viewers tuning in for the tournament held every four years.

3) The intensity of cyclones is often measured using the Saffir-Simpson Hurricane Wind Scale, which categorizes them based on their sustained wind speeds.

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