1) The average person spends around six months of their lifetime waiting for red lights to turn green.

2) The concept of sovereignty refers to the supreme authority and power of a state to govern itself, make decisions, and control its own territory without interference from external forces.

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

4) The longest English word is "pneumonoultramicroscopicsilicovolcanoconiosis," which refers to a lung disease caused by inhaling very fine silica dust.