On August 11, 1994, a man in Philadelphia sat down at a computer and bought a CD. The album was Sting’s Ten Summoner’s Tales, the price was $12.48 plus shipping, and the seller was a young company called NetMarket. Nothing about the object...
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“The cloud” may be the most successful disappearing act in modern technology. Upload a photograph and it seems to float away. Stream a film and it arrives from nowhere. Ask an AI system a qu...
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You mention hiking boots over dinner. The next morning, an advertisement for hiking boots appears on your phone. You never remember searching for them. The coincidence feels too precise, and...
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You see someone stretch their jaw, squeeze their eyes shut and take a long, involuntary breath. A few seconds later, your own mouth opens. Sometimes you do not even need to see the yawn: hea...
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Ask a child to draw the Sun and there is a good chance they will reach for a yellow crayon. Search for a Sun emoji and you will find the same convention. For centuries, artists have painted...
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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 m...
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Imagine falling feet-first toward a black hole. At first, if the black hole were isolated and you began far enough away, the experience would not feel supernatural. You would be in free fall...
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The little hat-and-glasses icon has become shorthand for secrecy. Open an Incognito window in Chrome — or a Private Browsing window in another browser — and it feels as though you have stepp...
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A penguin standing on ice looks as though someone designed a bird with a torso, two feet and almost nothing in between. Its legs seem impossibly short, and when it starts walking, the famili...
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Every few years, a headline or social-media post seems to announce the same piece of cosmic good news: Pluto is a planet again. For anyone who learned the old nine-planet Solar System in sch...
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