On November 20, 1969, Apollo 12 astronauts Pete Conrad and Alan Bean left the lunar surface and rejoined Richard Gordon in orbit. Their lunar module's ascent stage was no longer useful, so mission controllers deliberately sent it crashing b...
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A bitcoin cannot be held in your hand. It does not represent a legal claim on a company, pay a dividend or give its owner a stream of rental income. There is no warehouse containing one bar...
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Artificial intelligence used to be the sort of technology most people encountered without thinking about it. It filtered spam, ranked search results, recommended movies and helped cameras re...
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Ask a modern AI whether it is frightened, lonely or aware of its own existence and it may produce an answer that sounds uncannily introspective. It can discuss its “thoughts,” describe imagi...
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There is a moment at almost every birthday party when the room changes. The lights dim, a cake appears, tiny flames tremble above the icing and everyone waits while one person silently makes...
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On the morning of November 14, 1963, sailors south of Iceland saw something that looked at first like a ship on fire. A dark column was rising from the North Atlantic. It was not smoke from...
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Your passport knows exactly how old you are. Your cells are a more complicated matter. Two people born on the same day can reach middle age with very different cardiovascular health, physica...
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Few sights make the Moon seem more theatrical than an early-autumn moonrise. A huge amber disk appears behind trees, rooftops or distant hills, looking far larger than the Moon we see later...
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On an autumn Sunday in the United States, a peculiar national clock starts ticking shortly before 1 p.m. Eastern Time. Televisions switch on. Fantasy lineups receive one last nervous inspect...
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Some of the most senior people inside the U.S. military recently found themselves in an unusual position: sitting in a room, connected to physiological sensors, answering questions while inv...
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