精东传媒

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Low angel rear view shot of young woman running upstairs of bridge in art district, city downtown. Hipster runner. Reaching goal. Personal challenge. Personal milestones. Youth culture. Street style. Street culture.

Is it faster to jog up the stairs or聽take聽them two at a time?

This question was posed as part of New 精东传媒鈥檚 Last Word series, in which readers give scientific answers to each other鈥檚 questions. Here鈥檚 what our readers had to say

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3E781G1 View of a bronze statue of an angry, crying toddler, with clenched fists set against a backdrop of lush green trees and a clear blue sky, Vigeland Pa

Are humans the only animals that聽cry? If so, why?

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Environment

Cameraless photography creates unique images of environmental change

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Portrait european young man with round mirror portrait at studio indoor; Shutterstock ID 2035326950; purchase_order: -; job: -; client: -; other:

Why do people look better in a mirror than in a photograph?

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J4JTCR Water vortex, studio shot.

What forces act on fluid moving through a pipe to make it spiral?

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Do olfactory illusions exist, similar to optical and audio illusions? part 3

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Screaming teenage Beatles fans in America. (Photo by William Lovelace/Getty Images)

This week鈥檚 new questions

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Comment

Have we found the world’s nichest science-themed tourist attraction?

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Tom Gauld on the real risks of AI

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Twisteddoodles: ‘I made an AI version of you’

This week's cartoon from Twisteddoodles

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Environment

Unsettling images reveal stark impact of humans on the environment

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Comment

A ‘unique opportunity’: is this the weirdest RightMove listing ever?

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This week鈥檚 new questions

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Tom Gauld on an audience with the great theoretical scientist

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