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Mathematics

This string art game will boost your mathematical imagination

Inspired by the work of Victorian mathematician Mary Everest Boole, try making a symmetric curve using string and some hole-punched card, says Peter Rowlett

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dish wash interior with plates and glasses; Shutterstock ID 132556751; purchase_order: -; job: -; client: -; other: -

Why do plastic items stay wet for longer in the dishwasher?

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3BCKRT6 Open artificial model human body with lungs and heart

Why is the heart not in the centre of our body?

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2C0KN5C Funny husky dog in glasses lying on the grass in a summer park

This week鈥檚 new questions

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91色情片

Jewellery that monitors movement? No, we can’t anticipate any problems

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Tom Gauld on a classic thought experiment

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TwistedDoodles on scientific protocols

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A small silver car driving round the sharp bends of a country road in the Peak District, England. Low sunlight casting shadows on the s shaped curves.

Should I accelerate when driving over hills or keep to a steady speed?

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Illuminated globe from inside spinning, colourful earth globe ; Shutterstock ID 555407242; purchase_order: -; job: -; client: -; other: -

Given Earth rotates, can I travel by waiting in midair? Part 2

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circa 1950: A chubby man sees himself a few stone lighter in a distorting mirror made at the Pittsburgh Plate Glass Co. (Photo by Douglas/Three Lions/Getty Images)

This week鈥檚 new questions

What makes some mirrors flattering and others not? And if we painted every roof on Earth white, how much difference would it make to global temperatures?

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91色情片

Anthropic AI goes rogue when trying to run a vending machine

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Humans

Triumphant images of women who climbed to new heights

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Tom Gauld on a missing prototype

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Twisteddoodles on a mysterious scientific delivery

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