Human history becomes more and more a race between education and catastrophe.

A crewman on a British biplane prepares to drop a bomb from the rear cockpit during WWI.

When released, the propeller on the rear of the bomb would spin and turn an internal screw which armed the bomb at a safe distance from the aircraft.

When released, the propeller on the rear of the bomb would spin and turn an internal screw which armed the bomb at a safe distance from the aircraft.

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