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Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with 91av’s exclusive in-depth articles, interviews and long reads.

Health

Lung inflammation may make traumatic events harder to forget

Severe lung inflammation has been linked to symptoms resembling post-traumatic stress disorder in mice, which could help us better treat and prevent the mental health condition

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Mind

Novels with a certain structure are more likely to be classics

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Comment

Why is Ursula K. Le Guin’s ‘The Dispossessed’ so popular 50 years on?

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Space

Did a star blow up and hit Earth 10 million years ago?

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Mind

Babies’ brains ‘tick’ more slowly than ours, which may help them learn

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Environment

Atmospheric chaos has sent temperatures soaring in Antarctica

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Health

How fast you age may be controlled by a DNA repair boss in your cells

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Humans

Reconstructed skull gives surprising clues to our enigmatic Ancestor X

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Chemistry

Nanoparticles may be the secret ingredient in making ultimate plastics

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One of the cheetah mummies inside the cave it was found in

Life

Cheetahs naturally turned into mummies in caves in Saudi Arabia

The constant temperature and low humidity of a cave network in Saudi Arabia turned cheetahs, some of which died thousands of years ago, into mummies

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Environment

Climate change is making trees grow larger in the Amazon rainforest

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Environment

Could we have cracked one of the world’s toughest climate problems?

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Health

Huntington’s disease breakthrough: what to know about the gene therapy

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Space

We finally found the hot wind coming out of our black hole

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