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

Physics

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

The physics thought to explain the arrow of time is not as simple as you might think – and in traversable wormholes, Einstein’s theory of general relativity does in principle offer routes to the past

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What is time? The mysterious essence of the fourth dimension

Physics

What is time? The mysterious essence of the fourth dimension

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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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The rise of computer-generated, artificially intelligent influencers

Society

The rise of computer-generated, artificially intelligent influencers

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

Health

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

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

Mind

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

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Fast fashion is ruining the planet – here’s how to make it sustainable

Environment

Fast fashion is ruining the planet – here’s how to make it sustainable

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2F5J2D9 Recycled care label on t shirt, sustainable fashion wash cold, line dry, mend and repair, reuse, swap or donate with icons.

Environment

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

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A rethink of cause and effect could help when things get complicated

Mathematics

A rethink of cause and effect could help when things get complicated

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wild rat

Health

Plague never went away – now it could re-emerge in drug-resistant form

Plague may seem like an ancient disease, but the bacterium that causes it persists in rodents and fleas around the world. Researchers are warning that it could resurface in a form that our antibiotics can't treat and cause another pandemic

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Health

How many people died due to the Black Death in Europe?

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Environment

Do we need nuclear power in the energy mix to stop climate change?

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Humans

The female body is misunderstood and this is why, says Rachel E. Gross

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Life

How the massive dogs bred to protect livestock could save wolves too

Features