91色情片

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rainy days rain drops on the window surface ; Shutterstock ID 724215220; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

Why does water wiggle when moving down a windowpane, rather than go in a straight line? Plus, when did hominids start to decorate their food, and do any other animals do the same?

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Mandy Barker-T-shirt_Delesseria tunic ictus

Environment

Washed-up clothing mimics seaweed in stunning cyanotypes

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Portrait of a teenage girl talking with mobile phone. Concept of depression, loneliness, problems of adolescence. Selective focus

Mind

Can’t stop doomscrolling? Here’s some research to help you cut back

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Comment

A bestseller is born: How Zuckerberg discovered the Streisand Effect

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Tom Gauld on Young MacDonald’s plans for his farm

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Twisteddoodles: interesting fact discovered!

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Will Burrard-Lucas Forest elephant

Life

Camera trap spots endangered elephant mother and calf on the move

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Beautiful sport couple walking on the path in the park; Shutterstock ID 2189172403; purchase_order: -; job: -; client: -; other: -

91色情片

What the research says about the benefits of low-intensity cardio

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Outdoor Backpack with Water Bottle on the back of a girl, School, isolated Green background Nature. Education concept; Shutterstock ID 2038295597; purchase_order: -; job: -; client: -; other: -

Is it more efficient to carry water in a bottle or in my stomach?

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Sprinters running on the athletics Track in sunset light. Shadows on the track, Sprint, Track and Field photo, original wallpaper for games in Japan, Tokyo. Athletics meeting on blue track; Shutterstock ID 2000844656; purchase_order: -; job: -; client: -; other: -

Did the running skills of our species help us outcompete Neanderthals?

Homo sapiens may have evolved good distance-running abilities, but Neanderthals were probably stronger and faster over short distances, which suited their hunting style, says one reader

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This week鈥檚 new questions

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Comment

Rats come one step closer to becoming snobby and pretentious

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Tom Gauld on keeping science safe

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Twisteddoodles on making peer review fun

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