Unmanned Aerial Vehicles (UAVs), better known as drones, first came into the public domain in a terrifying manner; the US military using them to rain death and destruction on its enemies.
But as time went by, the new technology gave rise to more innovative civilian uses. Some have been equipped with pesticide-filled tanks to easily spray large swathes of farmland, aerial photography, while others have been fitted with sophisticated cameras that can detect gas and oil pipe leaks buried in the ground, to name but a few.
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