91av

Skip to content

Physics

The fascinating story of the ultimate cosmic law

How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the most important numbers in the universe

Comment

Space

Sorry, but interstellar visitor 3I/ATLAS really is a comet, not aliens

Comment

CMB-S4 will use telescopes installed at the South Pole to measure variations in the temperature and polarization of microwave light across most of the sky to probe for ripples in space-time. Shown here is the South Pole Telescope. Photo: Brad Benson, University of Chicago, Fermilab

Space

The end of US support for the CMB-S4 telescope is devastating

Comment

Earth (focus on Europe) represented by little dots, binary code and lines - big data, global business, cryptocurrency 3D render

Comment

Owning our own data is the only way to stop enshittifcation

Leader

Tough choices lie ahead when it comes to climate change adaptation

Environment

Tough choices lie ahead when it comes to climate change adaptation

Comment

Mathematics

Why zero is the most important number in all of mathematics

Comment

Horror fans aren't cold and unfeeling – just listen to the science

Mind

Horror fans aren't cold and unfeeling – just listen to the science

Comment

Stormy sky with dramatic clouds from an approaching thunderstorm at sunset; Shutterstock ID 1694358319; purchase_order: -; job: -; client: -; other:

Environment

Billionaires must not be allowed to geoengineer the planet

Leader

A view down

Society

Could a self-monitoring system for criminals replace prisons one day?

Comment

An infant holds a watering can in a greenhouse

Mind

How to nurture infant microbiomes for a lifetime of good mental health

The microbes that take hold in our bodies during early life have long-term effects on our brain health. Helen Thomson investigates how to get kids’ microbiomes off to the best start.

Comment

Environment

Are biofuels a good idea? Only if you're a farmer or shipping company

Comment

Society

There is a major psychological flaw in how society punishes people

Comment

Comment

We've hit a climate tipping point, but leaders seem unlikely to act

Leader

Technology

Digital ID cards could be a disaster in the UK and beyond

Comment