91av

Skip to content

Tom Gauld on the power of intricate formulae

Tom Gauld's weekly cartoon

1 October 2025

91av. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with 91av events and special offers.

Sign up

More from 91av

Explore the latest news, articles and features

Archaeopteryx. Artwork of the prehistoric feathered reptile Archaeopteryx which lived around 150 million years ago. Discovered in 1861 in southern Germany, it was the first feathered fossil specimen ever found. Despite possessing bird-like feathers, wings and a wishbone, Archaeopteryx also had sharp teeth, finger digits and a bony tail similar to non-bird predatory dinosaurs. This species and numerous other feathered fossils support the theory that modern day birds evolved from prehistoric theropod dinosaurs.

Life

91av recommends a brilliant take on the evolution of birds

Culture

Aerial view of an oasis on the edge of the desert town of Mao, known as the 'White City' for the limestone used to build local homes. For centuries, oases have enabled humans to survive, and even to thrive, in some of the harshest environments on earth. Now they are under threat from climate change.

Environment

Striking photos show how sands are encroaching on oases in the Sahara

Regulars

Think you have a good sense of humour? So do most people…

Comment

Think you have a good sense of humour? So do most people…

Regulars

Backrooms A strange doorway appears in the basement of a furniture showroom.

Comment

Sci-fi horror film Backrooms is a triumph for its 20-year-old director

Culture

1

Fully autonomous drones have killed human soldiers for the first time

2

Dinosaur-killing asteroid impact site stayed hot for millions of years

3

Mysterious ‘cold blob’ in the Atlantic suggests the AMOC is weakening

4

Millions of fossil whale bones found in deep-ocean ‘necropolis’

5

Understanding anorexia’s grip on the brain could unlock new therapies

6

A nuclear war between India and Pakistan could destroy the ozone layer

7

Unpicking endometriosis reveals how it affects more than the pelvis

8

The last-ditch plan to save coral reefs from utter destruction

9

What to read this week: Katrina Manson's terrifying Project Maven

10

Why we should all take quantum physics extremely personally