Most cell phone antennas have no purpose other than to make people believe that flipping up a 2 inch antenna just gave them better reception. They are not connected to any circuitry.
To find out if a watermelon is ripe, knock it, and if it sounds hollow then it is ripe. (If a worm should open the door, try the next one)
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
Only female bees work
You mostly breathe from only one nostril at a time!
