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Crunch time • We need an all-out effort to avert the worsening food crisis

New Scientist International Edition

COP29 opens in Azerbaijan

2024 set to be first year to hit 1.5°C • This year’s average global temperature is almost certain to exceed 1.5°C above pre-industrial times, a milestone that climate experts say must spur urgent action. Madeleine Cuff reports

Breaking the limit

Any delay in reaching net zero will influence the climate for centuries

Audio AI is also riddled with bias • Like their text and image counterparts, audio-generating AI models have issues

Sunscreen particles boost rice growth during heatwaves

Chimps do better at hard tasks when they have an audience

Chinese rover finds more evidence for an ancient Mars ocean

Bird flu antibodies found in US dairy workers without any symptoms

Why wet hairy creatures feel the need to shake dry

Ancient Egyptians shaped the horns of living sheep

Knots made in a quantum fluid can last forever

Solving a quantum Rubik’s cube • A new version of the popular puzzle would be far more difficult – but not impossible

Elephants use a hose to shower and to prank each other

More people now live with pain than before pandemic

DNA analysis rewrites the stories of people buried in Pompeii

Marmots may have the solution to a long-running debate in evolution

A gas that breaks the laws of physics • Moving heat from a cold area to a warm one isn’t normally allowed, but a thin gas may do the trick

3D printing with light and sound waves

Clues to the invention of writing • Some symbols from an early Mesopotamian script can be traced back to cylinder-shaped seals that were rolled over clay to record transactions, reports Michael Marshall

Worldwide death toll from cancer is expected to nearly double by 2050

Vampire bats have rare ability to use protein as fuel

People first • The future of treating autoimmune type 1 diabetes

Sense of an ending • Evidence that animals grieve is growing, but we should be wary of letting our biases cloud this topic, says philosopher Susana Monsó

Field notes from space-time • Universal perspective Particle physics is no longer seen as vital by the US establishment, so funding has fallen. But its ability to create a sense of awe is priceless, says Chanda Prescod-Weinstein

Red shift

Your letters

Mining the future • As we enter an “electro-digital age”, James Dinneen welcomes a balanced briefing on the dilemma of mining the metals needed to ditch fossil fuels

When men say nothing • A new documentary is a fresh and personal look into what happens if men bottle up their emotions, finds Elle Hunt

New Scientist recommends

What binds art and science? • The US’s biggest art event takes on science this year, promising to make Southern California a showcase for creative challenge, says Christian House

THE MYOPIA EPIDEMIC • Near-sightedness is on the rise around the world, but is the end in sight for this surge in blurriness, asks Graham Lawton

Recipe for disaster • As global temperatures rise, food supplies are becoming less secure. So how do we ensure there will be enough for a growing population, wonders Michael Le Page

How you can help solve the...