Dog owners become experts in noticing small mysteries. One week the mystery is a dog that seems unable to stop licking its front paws. The next it is the same animal stepping onto the lawn and eating grass with the concentration of a miniat...
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There are few moments quite like looking into the toilet and discovering that something which is normally brown has turned unmistakably green. It is the kind of question many people would ra...
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A cat is calmly eating from its bowl. While its attention is elsewhere, someone quietly places a cucumber on the floor behind it. The cat turns, sees the vegetable and suddenly launches itse...
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In 1997, IBM's Deep Blue defeated world chess champion Garry Kasparov in a match. The achievement looked like a milestone on the road to machine intelligence: a computer had conquered a game...
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Open the Voynich Manuscript and almost everything about it looks tantalizingly close to comprehension. Lines of neat handwriting run from left to right. Words are separated by spaces. Paragr...
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A thirsty tomato plant can be surprisingly noisy. Not to us: stand beside it in a greenhouse and you will probably hear nothing beyond leaves rustling and the ordinary sounds of the room. Bu...
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High on a mountain in late spring, a patch of snow can suddenly look as though someone spilled watermelon juice across it. The surface turns pale pink, rose red or even crimson, sometimes st...
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In daylight, the water may look ordinary — or even unappealingly reddish-brown. Then darkness falls, a wave breaks, and the shoreline suddenly flashes electric blue. Footsteps sparkle in wet...
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Put a slice of aged cheddar in a hot pan and things can become unpredictable. It may soften beautifully, but push the temperature too far and orange oil can pool around clumps of tightening...
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On the evening of May 17, 1884, New Yorkers witnessed a sight strange enough to compete with the bridge beneath it. A procession of circus animals moved across the East River from Manhattan...
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