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planet Earth

How much do you know about the world?

91av would like your help for an upcoming story and talk at 91av Live. Please fill in our survey to contribute - it shouldn't take you longer than 10 minutes, and we won't share any of your individual answers.

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Technology

Make a weather station with BBC micro:bits and a sensor

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The ‘sexy’ lichen that puts lead in your pencil, but not in a good way

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How does water hydrate us?

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Why do dogs and horses roll on their backs when happy?

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highlighters

This week’s new questions

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Niamh Nic Daeid

Technology

Your DNA could transfer to a weapon you have never touched

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satellite dots in English Channel

Technology

Satellite image captures a hyperconnected English Channel at work

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Newton cartoon

Liana Finck cartoon

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Technology

How the US almost introduced a universal basic income – 50 years ago

With automation threatening jobs, US president Richard Nixon proposed a universal minimum income - an idea that only recently has come back in vogue

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Technology

Make a rain alarm with copper tape and a BBC micro:bit

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On the hot seat: The mysterious case of the exploding Floridian toilet

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Far-sighted: How can some people see at great distance?

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This week’s new questions

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