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 an unsettling explanation immediately suggests it...
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Ask the meaning of life in the right corner of the internet and there is a good chance someone will answer with a number: 42. It has become one of popular culture’s most durable private joke...
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Space is famously cold. The number repeated in textbooks, documentaries and trivia lists is about 2.7 kelvin, or roughly −270.4 °C — less than three degrees above absolute zero.That number i...
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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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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...
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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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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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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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Watch a turkey closely and its stare can seem almost unnervingly steady. Its eyes sit high on the sides of its head, scanning the surroundings while the bird walks, feeds and watches for dan...
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