51动漫

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Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with 51动漫鈥檚 exclusive in-depth articles, interviews and long reads.

5 Evolution - How long does evolution take? 2E8WW3F Time, traveling through space and time, 3d illustration

Earth

How long does evolution take? It happens on two different timescales

To make sense of the fact that adaptation can happen quickly and yet true evolutionary change seems to take forever, biologists suggest that evolution runs on two very different clocks

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JILA?s three-dimensional (3-D) quantum gas atomic clock consists of a grid of light formed by three pairs of laser beams. A stack of two tables is used to configure optical components around a vacuum chamber. Shown here is the upper table, where lenses and other optics are mounted. A blue laser beam excites a cube-shaped cloud of strontium atoms located behind the round window in the middle of the table. Strontium atoms fluorescence strongly when excited with blue light.

Physics

Jun Ye interview: What use is the world’s most accurate clock?

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8 Can we live without time?

Mind

Can we live without time? Not if we value a solid sense of self

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6 Will we ever unite physics? The infinite time is circulating in the universe, 3D illustration; Shutterstock ID 498879817; purchase_order: -; job: -; client: -; other: -

Physics

Will we ever unite physics? Clocks in superposition could offer clues

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Physics

Will time ever end? The answer lies in the death throes of the cosmos

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Physics

What is time? The mysterious essence of the fourth dimension

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Physics

Could we ever go back in time? Relativity does not rule it out

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3 How Do We Sense Time? Mechanical brain, conceptual image. Composite image of coloured medical imagery of a human brain and skull, with cogs and gears representing concepts such as memory, time and mechanical brains. The imagery includes 3D computed tomography (CT) scans of the skull and 3D magnetic resonance imaging (MRI) scans of the brain. The scans are of a 30-year-old woman.

Mind

How do we sense time? The brain cells that order our memories

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Virunga Volcanoes National Park at dawn. Rwanda, Africa

Life

Saving Virunga’s endangered gorillas with green power and chocolate

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Society

The rise of computer-generated, artificially intelligent influencers

Virtual humans are gaining popularity on social media, with some amassing millions of young followers. But what psychological impact are they having?

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Health

We are finally starting to understand brain fog and how to treat it

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Mind

Can you take the trip out of psychedelics and still treat depression?

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Environment

Fast fashion is ruining the planet 鈥� here鈥檚 how to make it sustainable

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Environment

Sustainable fashion: How to cut the environmental cost of your clothes

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