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Pyramids in the deserts of Sudan are the ruins of a powerful lost civilisation that rivalled Egypt. However, why are the pyramids there and who built them?
What caused the Nazi aircraft to explode into a giant ball of fire over New Jersey in 1937? Experts use cutting-edge technology to investigate the event.
Cutting-edge technology is helping experts investigate the Bermuda triangle. Using new techniques, they search for evidence of aliens on the ocean floor.