This week's magazine
4 February 2023
Issue 3424
On the cover
Editor's picks
Health
We must not lose the interest in immune health that covid-19 spurred
Health
How to tell if your immune system is weak or strong
Health
The food and drink that really can boost your immune system
Health
How genetically engineered immune cells are beating some cancers
Health
The AI immune system that’s changing our understanding of human health
Health
Why do some people appear to have a naturally strong immune system?
Health
The sex differences that impact the strength of your immune system
Health
What effect did lockdown have on your child’s immune system?
Health
How the immune system changes with age and why
Life
Inside the complex and extremely violent world of warring mongooses
Table of contents
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Space
Rare green comet C/2022 E3 is about to make its closest pass by Earth
A comet that last passed by Earth about 50,000 years ago is coming around again and will make its closest pass on 1 February, at which point it may be visible with the naked eye
Life
Animals that care for young may have more mutations and evolve faster
Technology
DeepMind AI is as fast as humans at solving previously unseen tasks
Life
Dolphins that help humans catch fish are more likely to survive
Life
‘Love hormone’ may not be crucial for social bonding after all
Space
Supernovae might be a good place to hunt for alien broadcasts
Life
Reports of Bigfoot rise when at least 900 black bears are in the area
Life
Multicellular life may have begun with brief alliances between cells
Physics
Flames that don’t flicker could make engines more efficient
Technology
Metal robot can melt its way out of tight spaces to escape
Earth
Earth’s ‘geological thermostat’ is too slow to prevent climate change
Technology
ChatGPT can find and fix bugs in computer code
Space
‘Forbidden’ planet somehow escaped consumption by its dying host star
Health
Why gene variant impairing alcohol breakdown raises heart disease risk
Life
Fruit bats get swabbed to look for diseases that could jump to humans
Technology
The outline of people’s bodies can be detected from Wi-Fi signals
Health
Skin patch makes ultrasound images of your heart as you move
Technology
Artificial skin can detect nearby objects without even touching them
Life
Dogs can tell when you want to give them a treat – even if you don’t
Analysis
Health
Taxing sugary drinks may not cut obesity as much as headlines claim
A study has suggested that the UK’s 2018 sugar tax prevents 5000 cases of obesity among 10 to 11-year-old girls in England every year, but the picture may be rather more complicated than that
Health
The covid-19 virus gets into the brain – what does it do there?
Technology
We need to accept that deepfakes are here to stay in film and TV
Physics
Why the most important topic in physics could be statistical mechanics
Features
Health
How to tell if your immune system is weak or strong
New blood tests can reveal whether your immune system is fighting fit by looking at the balance of different immune cells, but there may be a simpler way of gauging your immune health
Health
What effect did lockdown have on your child’s immune system?
Health
How genetically engineered immune cells are beating some cancers
Health
Why do some people appear to have a naturally strong immune system?
Health
The sex differences that impact the strength of your immune system
Health
The food and drink that really can boost your immune system
Health
The AI immune system that’s changing our understanding of human health
Health
How the immune system changes with age and why
Life
Inside the complex and extremely violent world of warring mongooses
Culture
Technology
Pegasus review: Terrifying exposé of the world’s most powerful spyware
From French president Emmanuel Macron to ordinary whistle-blowers, the surveillance software Pegasus has been used to target thousands of people. Investigative journalists Laurent Richard and Sandrine Rigaud tell its story and explain why no one is safe
Humans
Don’t Miss: Innervate, an EP reflecting on epilepsy by Liza Bec
Humans
Impulse review: An authoritative, if dry, sexual behaviours manual
Humans
Arch-Conspirator review: Ancient Greek tragedy spun into sci-fi gold
More
Space
How to identify moon craters and mountains on the lunar surface
The moon’s brightness might frustrate some stargazers, but a closer look will reveal some amazing features, says Abigail Beall
Tom Gauld: Maths puzzles for conspiracy theorists
Twisteddoodles on two distinct categories of video observations
Regulars
Do you know where your carrots come from? Science can help if not
Feedback is our weekly column of bizarre stories, implausible advertising claims, confusing instructions and more