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Table of contents

Leaders

Physics

The biggest threat to Chernobyl is no longer radiation

Forty years after the world’s biggest nuclear disaster, the safety of Chernobyl hangs in the balance – though not because of the radiation risk

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Physics

Quantum entanglement can be measured in solids for the first time

A method that relies on hitting materials with neutrons can measure how much quantum entanglement hides within them, which could enable new kinds of quantum technology

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Health

Migraines could be treated by ramping up the brain's cleaning system

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Health

CAR T-cell therapy takes woman from bedridden to 'perfectly fine'

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Physics

Physicists resolve a long-standing puzzle over the size of a proton

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Health

Mysterious 'compound X' clears toxic Parkinson’s proteins from brain

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Physics

Particles seen emerging from empty space for first time

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Physics

Quantum batteries could be charged by reversing time

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Humans

Why early humans radically changed their toolkits 200,000 years ago

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Environment

Key ocean current is slowing at locations around the Atlantic

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Life

Emperor penguins added to endangered list after rapid decline

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Life

Chimpanzee group's violent rupture hints at evolutionary roots of war

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Space

NASA’s Artemis II mission was a historic success

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Mathematics

The secret project to settle controversial maths proof with a computer

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Life

Hidden fossils reveal secrets of oceans before major mass extinction

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Life

Tweaking the smell of cat food can encourage fussy felines to eat

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Analysis

Environment

Are manure digesters a real solution to dairy farm emissions?

Anaerobic digesters converting manure to biogas reduce methane emissions from livestock, but incentives for them have encouraged factory farms to get bigger

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Aperture

Technology

Startling images show how fake news isn't just a 21st century issue

From huge geese to flying cars, these photographs from a new exhibition at the Rijksmuseum reveal how we have been manipulating images for over a century

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Features

Physics

Exclusive report: Inside Chernobyl, 40 years after nuclear disaster

¿ìè¶ÌÊÓƵ reporter Matthew Sparkes secured unrivalled access to Chernobyl's most crucial scientific sites, where researchers are fighting to protect the area and ensure it remains safe amid the constant threat of attack from Russia

Features

Physics

The man who crawls into the perilous heart of the Chernobyl reactor

Features

Society

My life as a meteorologist in Chernobyl under Russian occupation

Features

Mind

How autoimmune conditions can unexpectedly drive mental illness

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Culture

Space

What to read this week: Emma Chapman's mind-expanding Radio Universe

An imaginative and compelling book reveals how radio waves help us tune in to our universe – and even search for alien civilisations, says Karmela Padavic-Callaghan

Culture

Life

Werner Herzog searches for ghost elephants in stunning new documentary

Culture

Technology

¿ìè¶ÌÊÓƵ recommends Jamie Bartlett's insightful How to Talk to AI

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More

Health

Iodised salt has become uncool but many of us need to eat more iodine

Iodine deficiency is on the rise among people in the UK, the US and Australia. A century ago this led to drops in IQ, height and thyroid health – and the modern fancy salt fad may be leading to a resurgence, says columnist Alice Klein

Comment

Physics

How a century-long argument over light’s true nature came to an end

Comment

Mathematics

The man who ruined mathematics

Comment

Tom Gauld on finding fresh audiences for a scientific theory

Regulars

Twisteddoodles uses Gen Z slang to explain chemistry

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Comment

Why cloning anyone – even Jim Carrey – isn't the best plan ever

Feedback discovers that a conspiracy theory has formed that various celebrities have been replaced by clones, and sees just a few small problems with the idea

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Letters

Regulars

The last word