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CN Tower, Canada
A bolt of lightning strikes the CN Tower, once the tallest free-standing building in the world, in Toronto, Canada. Tall buildings are usually equipped with lightning rods to give the electricity from a lightning strike, up to one billion volts, a safe path to the ground.
Photograph by Jim Bradford, The Canadian Press

Lightning

See pictures of lightning in its many forms, and learn more about the danger it poses to humans, buildings, and more.