51动漫

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Saltwater crocodile (Crocodylus porosus) swimming at water surface, split-level, New Guinea, Indo-pacific

How do crocodiles maintain their power despite being mostly still?

Crocodiles get their explosive power from a type of fibre in their muscles, and are well adapted to a sedentary life, say our readers

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This week鈥檚 new questions

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Closeup portrait, senior mature man, disgust face, pinch nose, something stinks, very bad smell, isolated outdoors outside background. Negative emotion, facial expression; Shutterstock ID 640783057; purchase_order: -; job: -; client: -; other: -

Does anything actually cure hiccups?

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Close up of hand holding compass business navigate, passing through the crisis and growth in the economic.; Shutterstock ID 2115345185; purchase_order: -; job: -; client: -; other: -

At what height do navigation compasses stop working?

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Why do little children run everywhere instead of walking? (continued)

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FTTG61 Ball of white heavy thread isolated on white

This week鈥檚 new questions

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Young women swim breaststroke, wearing swimming caps and goggles.

Slow breaststroke vs faster front crawl – which is more efficient?

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E6BAMW Green peas

Why are peas green when they grow in the dark inside a pod?

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TTN6C3 Low angle majestic view of aurora borealis over forest

Does Earth鈥檚 magnetic field affect the weather? (continued)

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This photograph is of the sky over north London on Wednesday 15th June at 8:13 am. The picture Is cropped to centre the image. The effect was not due to camera or glass of vehicle photo was taken from and looked identical to naked eye. What can have caused the contrails to end so evenly? No aircraft were immediately apparent, it did turn out to be a remarkable hot day. I am assuming my passenger?s suggestion of a glitch in the matrix leading to an incomplete sky rendering is incorrect- can you or your readers provide a more sensible explanation

This week鈥檚 new questions

What caused the contrails in the sky to end so abruptly (see picture)? And what is the optimal number of piercings to make in the film covering a microwave meal?

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Why do insects buzz when flying? Does making this sound help them?

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What provides the healing effect of a placebo treatment? Part 2

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Could dinosaurs have developed human-like abstract intelligence?

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This week鈥檚 new questions

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