In 1874, renowned chemist Sir William Crookes sat in a darkened room, eyes fixed on a curtain over an alcove. The curtain twitched, and out came a glowing ghost of a young woman, dressed in a white shroud. He was entranced.
Why we keep hunting ghosts—and what it says about us
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Featured HeadlinesWhy Tesla’s Autopilot crashes spurred the feds to investigate driver-assist technologies – and what that means for the future of self-driving cars
