Frog-eating bats identify edible frogs from poisonous ones by listening to the mating calls of male frogs. Frogs counter this by hiding and using short, difficult to locate calls.

Thomas Watson, who was the chairman of IBM in 1943 predicted that their would probably only be a world market for five computers.

Cranberries are sorted for ripeness by bouncing them; a fully ripened cranberry can be dribbled like a basketball.

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