Look up from a truly dark place and the Milky Way appears as a pale river of light crossing the sky. That glow is produced by stars so numerous and distant that most cannot be distinguished individually with the naked eye. It raises one of...
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The internet contains billions of websites, streams enormous quantities of video, connects data centers across continents and crosses oceans through cables thousands of kilometers long. So i...
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Suppose you buy a brand-new one-terabyte SSD and place it on an impossibly precise scale. Then you fill every available byte with photographs, films, documents and music. Has the drive becom...
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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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You type a search into Google, press Enter, and nothing happens. The page spins. Gmail refuses to load. Drive throws an error. Within seconds, one of the internet's most common diagnostic qu...
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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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The sky is so reliably blue on a clear day that the color can feel like a property of the atmosphere itself, as though Earth were covered by an enormous blue ceiling. It is not. Air is essen...
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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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If Mars can come within roughly 55 million kilometers of Earth, why does a spacecraft sent there travel something closer to 480 million kilometers — and spend around seven months doing it? T...
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Stay in a swimming pool or bathtub long enough and something peculiar happens to your hands. The smooth pads of your fingers turn into a landscape of ridges and valleys, as if the skin has s...
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