杏吧原创

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Physics

The kilogram has been transformed as new definition takes hold

This picture shows the Kibble balance 鈥� the new way to measure the kilogram, as it joins other units in the SI measurement system which are pegged to physical constants

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Liana Finck cartoon

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air pollution particles

Environment

Deadly air pollution illuminated in beautiful long-exposure photograph

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Feedback: Are we dog-walking into a surveillance state?

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Has all the hardware sent into space affected Earth鈥檚 gravity?

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Kissed by a human or licked by an animal: which has more disease risk?

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Does your fringe grow faster than the hair on the rest of your head?

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This week’s new questions

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This week’s new questions

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Kate Shaw

Physics

Physicist Kate Shaw on Higgs bosons and how reality is an illusion

Kate Shaw uncovers cosmic secrets at CERN鈥檚 Large Hadron Collider. She reveals what particles tell us about the world 鈥� and how Stephen Hawking inspired her

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Technology

Becoming a maker: How switches can bring you piping hot toast

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Physics

From the archives: How a cosmic illusion proved Einstein鈥檚 relativity

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Health

Georgios Papanikolaou: inventor of the Pap smear cervical cancer test

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Health

How Lucy Wills discovered a medical marvel in Marmite

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