Artificial intelligence has become one of those phrases that seems to describe everything at once. It can mean the system that recommends a song, the software that detects a suspicious bank transaction, a program that recognizes a tumor in...
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There is a point in an Arctic winter when ordinary ideas about daytime stop being useful. The sun may skim the horizon without properly rising, snow can turn blue in the long twilight, and a...
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The most spectacular sign of a geomagnetic storm can look almost supernatural. Green curtains ripple across the night sky, red light appears hundreds or even thousands of kilometres farther...
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On the evening of October 29, 1969, a student programmer at UCLA began typing a word into a computer. The machine was connected over a network to another computer at the Stanford Research In...
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Seal a cat inside a box with a radioactive atom, a radiation detector and a mechanism capable of releasing poison. Arrange the experiment so that, after an hour, the atom has a 50 percent ch...
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Draw a line from Miami to Bermuda, another from Bermuda to Puerto Rico, and a third back toward Florida, and you have the rough outline of one of the most famous imaginary places on Earth. T...
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When George Herbert, the 5th Earl of Carnarvon, died in Cairo on April 5, 1923, the timing was almost too perfect for a sensational story. Only months earlier he had stood with archaeologist...
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The date of the daylight saving time change in 2023 in Italy is expected to be March 26, when the clock will need to be moved one hour forward compared to solar time, so at 2:00 in the morni...
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