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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.

A child in Peru takes candy from a shelf

Health

Child obesity is now more common than undernutrition – what do we do?

Childhood obesity rates have surpassed those of undernutrition for the first time, suggesting efforts to combat malnutrition will have to shift gears.

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Health

Hedonistic habits could turn you into a mosquito magnet

News
Juno Over Jupiter's South Pole

Space

Jupiter is smaller and more squashed than we thought

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Clouds over Arsia Mons

Space

A weird cloud forms on Mars each year and now we know why

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Humans

Early Neanderthals hunted ibex on steep mountain slopes

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Anglo-Saxon coins

Humans

Britain’s economy thrived after the withdrawal of the Roman Empire

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Space

Deflecting a deadly asteroid just got a lot less dangerous

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Technology

DNA cassette tape can store every song ever recorded

News

Health

Antibody cocktail could work as a universal flu treatment

News
Composite photo shows the moon moving (from L to R) during a total lunar eclipse above Tokyo in the early hours of Sept. 8, 2025. (Photo by Kyodo News via Getty Images)

Space

Blood moon lunar eclipse wows the world

This incredible composite photo shows how the moon's colour changed as it traversed Earth's shadow during an eclipse earlier this week

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Humans

We evolved to match local micronutrient levels, which may be a problem

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Space

Gravitational waves finally prove Stephen Hawking’s black hole theorem

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Space

NASA hasn’t found life on Mars yet – but signs are promising

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Health

Tiny structure in the brain could be driving how much you eat

News