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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.
Why did humans evolve big brains? A new idea bodes ill for our future

Humans

Why did humans evolve big brains? A new idea bodes ill for our future

Recent fossil finds suggest that big brains weren't an evolutionary asset to our ancestors but evolved by accident – and are likely to shrink again in the near future

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New anti-ageing vaccines promise to prevent diseases like Alzheimer's

Health

New anti-ageing vaccines promise to prevent diseases like Alzheimer's

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The Tropical jungle with river and sun beam and foggy in the garden

Humans

How ghost cities in the Amazon are rewriting the story of civilisation

Features

The hacker turned politician using digital tech to reimagine democracy

Technology

The hacker turned politician using digital tech to reimagine democracy

Features

This image from ESO?s VISTA telescope captures a celestial landscape of vast, glowing clouds of gas and tendrils of dust surrounding hot young stars. This infrared view reveals the stellar nursery known as NGC 6357 in a new light. It was taken as part of the VISTA Variables in the V?a L?ctea (VVV) survey, which is currently scanning the Milky Way in a bid to map our galaxy?s structure and explain how it formed.

Physics

Why this is a golden age for life to thrive across the universe

Features

MAZATLAN, MEXICO - APRIL 08: A man prepares his telescope to see the eclipse on April 08, 2024 in Mazatlan, Mexico. Millions of people have flocked to areas across North America that are in the

Physics

Is it possible to fully understand the universe while living in it?

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star milkyway

Space

Why you should feel comforted, not scared, by the vastness of space

Features

This mind-blowing map shows Earth’s position within the vast universe

Space

This mind-blowing map shows Earth’s position within the vast universe

Features

HY0AKX Little green alien and welcome sign welcomes visitors to a business in Roswell, New Mexico

Space

Why our location in the Milky Way is perfect for finding alien life

Features

https://www.esa.int/ESA_Multimedia/Images/2022/07/Stephan_s_Quintet_NIRCam_and_MIRI_imaging Stephan?s Quintet ? NIRCam and MIRI imaging An enormous mosaic of Stephan?s Quintet is the largest image to date from the NASA/ESA/CSA James Webb Space Telescope, covering about one-fifth of the Moon?s diameter. It contains over 150 million pixels and is constructed from almost 1,000 separate image files. The visual grouping of five galaxies was captured by Webb?s Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI). With its powerful, infrared vision and extremely high spatial resolution, Webb shows never-before-seen details in this galaxy group. Sparkling clusters of millions of young stars and starburst regions of fresh star birth grace the image. Sweeping tails of gas, dust and stars are being pulled from several of the galaxies due to gravitational interactions. Most dramatically, Webb?s MIRI instrument captures huge shock waves as one of the galaxies, NGC 7318B, smashes through the cluster. These regions surrounding the central pair of galaxies are shown in the colours red and gold. This composite NIRCam-MIRI image uses two of the three MIRI filters to best show and differentiate the hot dust and structure within the galaxy. MIRI sees a distinct difference in colour between the dust in the galaxies versus the shock waves between the interacting galaxies. The image processing specialists at the Space Telescope Science Institute in Baltimore opted to highlight that difference by giving MIRI data the distinct yellow and orange colours, in contrast to the blue and white colours assigned to stars at NIRCam?s wavelengths.

Space

How big is the universe? The shape of space-time could tell us

We may never know what lies beyond the boundaries of the observable universe, but the fabric of the cosmos can tell us whether the universe is infinite or not

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Physics

Are space and time illusions? The answer could lie in black holes

Features

Physics

The universe is built a lot like a giant brain – so is it conscious?

Features

Physics

We are closer than ever to finally proving the multiverse exists

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Health

Why antibiotic resistance could make the last pandemic look minor

Features

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