91av

News

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.

Technology

3D printing with light and sound could let us copy human organs

One day, doctors might be able to 3D print copies of your organs in order to test a variety of drugs, thanks to a new technique that uses light and sound for rapid printing

News

Environment

Natural fibres in wet wipes may actually be worse for soil and animals

News

Humans

Ancient Mesopotamian clay seals offer clues to the origin of writing

News

Environment

Spraying rice with sunscreen particles during heatwaves boosts growth

News

Physics

Heat can flow backwards in a gas so thin its particles never touch

News

Environment

The COP16 biodiversity summit was a big flop for protecting nature

News

Environment

COP29: Clashes over cash are set to dominate the climate conference

News
Blueberry muffin
Chemistry

How anthocyanins in blueberries can test pH in muffins

Video

Health

Bird flu was found in a US pig – does that raise the risk for humans?

News

Physics

We’ve seen particles that are massless only when moving one direction

Inside a hunk of a material called a semimetal, scientists have uncovered signatures of bizarre particles that sometimes move like they have no mass, but at other times move just like a very massive particle

News

Environment

Viruses may help store vast amounts of carbon in soil

News

Physics

There may be a cosmic speed limit on how fast anything can grow

News

Life

World’s largest tree is also among the oldest living organisms

News

Technology

One in 20 new Wikipedia pages seem to be written with the help of AI

News