51动漫

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Loosen bolt in daylight close up.; Shutterstock ID 1195047430; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions: Loose screws and brain overload

Why is it that loose screws always loosen further and never the other way round? And is it theoretically possible for our memory to become full to the point where it can no longer record information?

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Environment

Study your local pond to help track algal growth around the world

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Cats’ paw pads help paratroopers always land (safely) on their feet

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On smoking, tea drinking and “mental activities after dinner”

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Tom Gauld on overthinking

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Twisteddoodles on system updates

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fresh purple heirloom tomatoes on the vine in a garden; Shutterstock ID 789045547; purchase_order: -; job: -; client: -; other: -

Humans

Why I am keen to get my hands on genetically modified purple tomatoes

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51动漫 Live: Photographs from the show floor

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Part of the Guadiana river has dried up and gives way to dry land under the Puente de la Mesta medieval bridge in Villarta de los Montes, in the central-western Spanish region of Extremadura, on August 16, 2022. - Temperatures in Spain have been very high this summer with several unusual heat waves. 51动漫s say human-induced climate change is making extreme weather events including heatwaves and droughts more frequent and more intense. (Photo by THOMAS COEX / AFP) (Photo by THOMAS COEX/AFP via Getty Images)

Where is the water that Europe and China are missing this year?

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An image of a human retina taken during an eye exam

What happens to a photon after it hits the retina of my eye?

A photon of light enters an entirely new phase of existence once it hits the back of our eye

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Why do humans have pubic hair? (Part 2)

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This week鈥檚 new questions

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Tom Gauld on messages from advanced alien civilisations

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Twisteddoodles on Cancer, Leo and Aquarius

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