Mr. Smarty Pants Knows
The surface area of a human lung equals that of a tennis court, the coldest McDonald's, and more
The lung is a spongy organ with a total surface area equal to about that of a tennis court.
The coldest McDonald's is in the Arctic Circle.
It takes two lanes of a given size to move 40,000 people across a bridge in one hour using modern trains, four lanes to move them on buses, 12 to move them in their cars, and only one lane for them to pedal across on bicycles.
According to The Economist, extremists of both sides are happier than moderates. Some 35% of those who call themselves "extremely liberal" say they are very happy, against only 22% of ordinary liberals. For conservatives, the gap is smaller: 48% to 43%.