This week's magazine
25 January 2025
Issue 3527
On the cover
Editor's picks
Health
A better understanding of our hormones and sleep could improve both
Health
Why your chronotype is key to figuring out how much sleep you need
Health
The surprising relationship between your microbiome and sleeping well
Health
How best to catch up on rest and pay off your sleep debt
Space
The physicist trying to build humanity’s lunar future with moon dirt
Health
Why sleep quality is so important – and so difficult to measure
Health
The new science of sleep: How to sleep better whatever your lifestyle
Health
What nine sleep researchers do to get their best night’s rest
Health
How to shift your circadian clock to beat your jet lag
Table of contents
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Space
James Webb captures a beautiful smattering of blue stars
The striking blue stars of the Leo P dwarf galaxy appear dashed across the lower right corner of this image from NASA's James Webb Space Telescope
Physics
A cosmic shape could explain the fundamental nature of the universe
Health
Mind-controlled robotic arm lets people with paralysis touch and feel
Environment
Air monitoring station records biggest ever jump in atmospheric CO2
Humans
Celtic tribe’s DNA points to female empowerment in pre-Roman Britain
Technology
Tiny insect-like robot can flip, loop and hover for up to 15 minutes
Physics
Ultra-thin material creates a magnetic mystery
Space
Mars may have a solid inner core like Earth does
Environment
Zero-carbon shipping fuel could be a new source of pollution
Technology
Humanoid robot learns to waltz by mirroring people’s movements
Humans
Ancient society may have carved ‘sun stones’ to end volcanic winter
Physics
Laser technique measures vast distances with nanometre precision
Life
Rabbits may eat their own teeth to boost their calcium intake
Space
Astronomers baffled by bizarre ‘zombie star’ that shouldn’t exist
Life
Giant isopod named after Darth Vader is a delicacy in Vietnam
Environment
Melting ice reveals millennia-old forest buried in the Rocky mountains
Space
A supermassive black hole is sending out a mysterious pulsing beat
Humans
Intricate ancient tattoos revealed by shining lasers on mummies
Health
Golden oyster mushrooms may stave off signs of ageing
Life
Fossil claimed to be new species of mosasaur is suspected forgery
Analysis
Space
Blue Origin vs SpaceX: Who is winning the battle of the rockets?
Blue Origin and SpaceX both launched rockets on 16 January, but while Jeff Bezos's company saw a launch success with New Glenn, Elon Musk's Starship exploded. What does this mean for the future of the space industry?
Health
Do we actually know what a healthy gut microbiome looks like?
Features
Health
The new science of sleep: How to sleep better whatever your lifestyle
We all know the tired old advice about how to get the best night's rest, but it can be hard to follow in the real world. A more personalised and holistic approach could help
Health
Why your chronotype is key to figuring out how much sleep you need
Health
Why sleep quality is so important – and so difficult to measure
Health
The surprising relationship between your microbiome and sleeping well
Health
What nine sleep researchers do to get their best night’s rest
Health
A better understanding of our hormones and sleep could improve both
Health
How to shift your circadian clock to beat your jet lag
Health
How best to catch up on rest and pay off your sleep debt
Space
The physicist trying to build humanity’s lunar future with moon dirt
Culture
Society
What should we do about societal divisions that run deeper than ever?
Kurt Gray's new book Outraged is a clear and insightful look at our society's deep divides, with valuable tips on building bridges
Technology
New Tom Hanks film fails to wow despite the cutting-edge tech
Technology
¿ìè¶ÌÊÓÆµ recommends Spike Jonze’s eerily prescient 2013 film Her
Mind
Severance is still the most thoughtful, complex show on television
More
Mind
The human sense of smell is quite good, and matters more than you know
Smell is often dismissed as a less important sense, but it makes our lives much more vivid, says Jonas Olofsson
Physics
Why we should talk about invisible matter, not dark matter
Health
The evidence that suggests you don’t need alcohol as a social crutch
Tom Gauld on stars and gutters and Oscar Wilde
Twisteddoodles on the first time doing an experiment
Regulars
Life
Why giving Jurassic Park’s velociraptors feathers is a good thing
Feedback is delighted by a YouTuber's sterling efforts to make Michael Crichton's velociraptors more accurate – but points out that they're still far too big