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Physics

The first signs of dark matter particles may finally have been spotted

Most of the matter in the universe is dark matter, but for decades physicists haven’t been able to directly observe it – that may have just changed

News

Health

How our bodies adapt to extreme temperatures – until it gets too hot

Features

Health

Should we all be taking low doses of lithium to prevent Alzheimer’s?

Comment

Environment

The UK just had its hottest summer ever

News

The aftermath of severe flooding along the Bhotekoshi River in Nuwakot, Nepal, on 28 August

Environment

Mountain warming means there will be more disasters like the Nepal flood

News

Comment

The best new science-fiction books of September 2026

Culture

L: Edinburgh, Scotland, UK, 13 August 2019. Edinburgh International Book Festival. Pictured: Jim Al-Khalili, broadcaster and theoretical physicist turns novelist with his debut novel Sunfall set 25 years in the future, with the world on the brink of apocalypse, which he talks about at the Book Festival W9EN9K R: On Time The Physics That Makes the Universe Tick Jim Al-Khalili

Comment

Want to know everything about time? Read Jim Al-Khalili’s new book

Culture

Comment

Can ‘quantum musical agents’ really make a melody better?

Regulars

Change your mind

Cognitive reserve – How to future-proof your brain

Podcast

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An airplane drops water on a wildfire in the foothills of Southern California, with palm grees in the foreground

Environment

5 graphs that show how the record-breaking El Niño will affect the world

A stronger El Niño means more extreme weather, including droughts and wildfires in some places and flooding and tropical storms in others

News

91av covers the latest developments in science, technology, health and the environment

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Mind

How much water do you really need to drink to keep your brain sharp?

Comment

Chemistry

Plastic bottles can be turned into edible, vanilla-flavour cookies

News

Health

Will muscle-boosting meds be the next big thing after GLP-1 drugs?

Comment

Health

How long could we possibly live? A new estimate is mind-boggling

Comment

Mind

Depression doesn’t shrink the brain like we thought it did

News

Environment

‘Off the charts’ El Niño is already the strongest since records began

News

Science-inspired journeys for curious minds

Discover our range of 100+ science-led tours, cruises, expeditions and short breaks across the globe, led by experts.

Start your journey with our 2027 brochure – out now.

Request your free brochure

Baobab trees at sunset at the avenue of the baobabs in Madagascar

Alzheimer’s Disease

Alzheimer’s disease is the most common form of dementia, which leads people to become progressively more forgetful and confused. Follow our coverage of the possible causes and treatments for this prevalent condition.

Health

Alzheimer’s, stroke, depression: The preventative power of sauna

Sustained heat stress is bad for our health and can be deadly. But we’re discovering that heat therapies like sauna, when used in the right way, have surprisingly wide-reaching benefits for health

Features

Health

Three factors in midlife can delay the onset of dementia by 13 years

News

Health

Alzheimer’s may start with inflammation in the skin, lungs or gut

News

Health

Game that reduces dementia risk may clear amyloid from men’s brains

News

Editor’s pick

A selection of recent articles and gems from the 91av archive

Mind

How wakeful rest may boost brain power in a manner similar to sleep

To gain the benefits of sleep, it was thought that the whole brain must switch off. But experiments suggest the right kind of rest can encourage our brain to improve memory and learning while we’re awake.

Features

Physics

The surprising upsides of living in a reality that repeats for eternity

Features

Health

Why many women with ADHD feel overwhelmingly controlled by their hormones

Features

Technology

Could a new approach to AI finally deliver artificial general intelligence?

Features

Events and tours

Science events and tours covering a wide range of topics all brought to you by world-class science speakers and experts

Excel London and online

91av Live

91av Live showcases the latest breakthroughs and innovations in science. With interactive experience across the show floor and talks from over 50 speakers, including Alice Roberts, Tim Spector, Giles Yeo, Jim Al-Khalili, Turi King, Maddie Moate and Chris and Xand van Tulleken.

Excel London and online 10-12 October 2026