91av

Skip to content

Technology

Salt batteries are about to shake up EVs and grid storage

Today, most rechargeable batteries are made from lithium ions, but sodium-ion alternatives could make battery tech much cheaper and offer other advantages

News

Our brains have their first thoughts unexpectedly early in life

Mind

Our brains have their first thoughts unexpectedly early in life

Features

D6H4GB Implanted blastocyst, artwork

Health

Embryos made without sperm or eggs reveal why many pregnancies fail

Features

Intoxicating and astonishing: Why 'The Selfish Gene' almost never was

Life

Intoxicating and astonishing: Why 'The Selfish Gene' almost never was

Features

Health

The 4 biggest myths about hydration, according to an expert

Comment

Dust rising from combine during crop harvesting, no-till technology professional occupation.

Environment

The Iran war is exposing the huge risks in our food system

Leader

Environment

Will war in the Middle East accelerate the clean energy transition?

Analysis

Health

Why drug overdose deaths have suddenly plummeted in the US

News

Environment

Is geothermal energy on the cusp of a worldwide renaissance?

Analysis

Tim Booth Photography hand image - one-time use only

Humans

The untold story of our remarkable hands and how they made us human

The evolution of human hands is one of the most important – and overlooked – stories of our origin. Now, new fossil evidence is revealing their pivotal role

Features

Health

Moving inductions to early morning could shorten labour by 6 hours

News

Humans

Why is childbirth so hard for humans – and is it getting even harder?

Features

Health

We can block the spread of HIV: Best ideas of the century

Features

Humans

91av’s guide to the 21 best ideas of the 21st century

Features