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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.

Future battery concepts

Technology

Quantum batteries that charge wirelessly might never lose efficiency

Today’s batteries lose efficiency – or “age” – through use, but theoretical quantum batteries might be immune to the problem if they are charged wirelessly

News
2RHHNP6 Dr. Tedros Adhanom Ghebreyesus, Director General of the World Health Organization(WHO), third from right, and Mansukh Mandaviya, Indian Minister of Health and Family Welfare and Chemicals and Fertilizers, second right, look with other delegates at pots filled with millets during the Global Conference on Traditional Medicine as part of the G20's Health Ministers' meeting in Gandhinagar, India, Thursday, Aug. 17, 2023. (AP Photo/Ajit Solanki)

Health

We need evidence about the risks and benefits of alternative medicines

News

Environment

The proposed Anthropocene definition is unscientific and harmful

News
P90HYK Particle collision and explosion. Bright blue particles with streams collide and create explosion shockwave with trails. Spherical multicolored explos

Physics

Physicists can complete our amazing, imperfect picture of reality

News

Physics

Pumps that beat like the heart could increase energy efficiency

News
Astrocyte brain cells. Fluorescence light micrograph of primary astrocyte cells from the brain of a mouse. Astrocytes have numerous branches of connective tissue that provide support and nutrition to the neurons (nerve cells) of the brain. Glial fibrillary acidic protein (GFAP) is green; cell nuclei are magenta; actin filaments are blue.

Health

New type of brain cell discovered that acts like hybrid of two others

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Environment

Earth has just seen its hottest three-month spell on record

News
Illustration of the leaves and seeds of Cannabis sativa

Humans

A million years of marijuana: How cannabis became our favourite weed

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Life

Gannets prefer to roll either right or left when they dive

News
The limestone spheroids of 'Ubeidiya

Humans

Mysterious ancient stones were deliberately made into spheres

Stone balls found at a site used by early humans about 1.4 million years ago didn’t become round after being used as hammers, but were intentionally knapped into spheres

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Life

Our ultra-mobile arm joints may have evolved for climbing down trees

News

Technology

GPT-4 wins chatbot lawyer contest – but is still not as good as humans

News

Life

Spotted salamander eggs hatch more easily if nibbled by predators

News

Life

Weird ways that animals experience the world differently to us

News