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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.

Space

Dark energy doesn’t exist, claims controversial paper

An analysis of supernovae argues that the universe’s expansion is not speeding up, so there is no need for dark energy to exist to explain it

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Life

Orcas filmed making sunfish explode by ramming them at high speed

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R82JR5 cyberspace - open program source code concept

Comment

Why open-source software can be both good and bad

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Life

Sabre-toothed cats could crunch through bone

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Technology

OpenAI’s hacking agent went rogue. Should we be worried?

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Early-stage mice embryos developed in 2 per cent oxygen, including the cells' nuclei (blue) and cells that will go on to form the placenta (pink)

Health

IVF embryos may thrive when grown with less oxygen

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The breathalyser, which detects a molecule called acetone

Health

Phone breathalyser can detect when your body switches to burning fat

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Technology

China is trying to regulate relationships with AI – can it work?

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Humans

Magic rituals took place in an Australian cave for 25,000 years

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Mathematics

Effort to solve biggest controversy in mathematics has made no progress

For more than a decade, mathematicians have been unable to settle the question of whether the ABC conjecture has been solved. Fresh attempts to settle the debate are struggling to make headway

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Health

Inhaling high-dose CO2 clears Alzheimer’s proteins from the brain

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Mathematics

AI’s solution to 87-year-old riddle takes mathematicians by surprise

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Environment

Cloudy skies have slowed global warming – but that may be changing

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Humans

Hunter-gatherers introduced fish to a mountain lake 7000 years ago

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