When a tropical system appears in the Atlantic, the urge to watch it move across a map can become almost compulsive. A disturbance off Africa becomes a colored area on an outlook. A few days later it may have a name. Soon there are satellit...
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When artificial-intelligence stocks surge, most attention goes to the companies designing the chips. Nvidia became the emblem of the AI boom because its GPUs perform much of the enormous par...
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During Atlantic hurricane season, a disturbance thousands of miles from Florida can become one of the most searched subjects in the United States within hours. A colored blob appears on a we...
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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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There is ordinary tiredness—the heavy-eyed feeling after a late night, a long flight or an exhausting week—and then there is the more puzzling question: Why am I tired all the time? You slee...
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You are reading an email, driving home or trying to fall asleep when one eyelid begins to flutter. It stops. Ten minutes later it starts again. By the third day, a tiny muscle movement that...
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On a clear Arctic night, the sky can begin almost imperceptibly. A pale band appears above the horizon, faint enough to be mistaken for a cloud. Then it brightens. The band folds into curtai...
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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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Taste a drop of seawater and the answer seems obvious: the ocean contains salt. The more interesting question is how it got there. There are no gigantic salt deposits steadily dissolving int...
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Look closely at the tip of your finger and you are looking at a landscape that began forming months before you were born. Ridges curve, split, stop and rejoin in patterns so detailed that th...
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