A more precise definition of the second is crucial to all sorts of physical measurements – but to get there, scientists have to pack up their extraordinarily fragile optical clocks and take them on tour | Continue reading
A company in the Netherlands says it has perfected a way to create "graft chimeras" with the skin of one plant and the innards of another | Continue reading
From robot rights to ageing and climate change, this month’s science fiction squares up to the big topics, with new titles from authors including Nick Harkaway and Eve Smith | Continue reading
Squeezing exercise into one or two days a week seems to have similar health benefits as doing the same amount of physical activity spread out throughout the week | Continue reading
A termination letter obtained by New Scientist reveals that the Trump administration has gutted the office that runs the country’s only nationwide survey on drug use and mental health | Continue reading
The concept of nothing once sparked a 1000-year-long war, today it might explain dark energy and nothingness even has the potential to destroy the universe, explains physicist Antonio Padilla | Continue reading
Under pressure from Elon Musk’s DOGE task force, NASA is cancelling grants and contracts for everything from lunar dust research to educational programmes | Continue reading
Even animals with very small brains turn out to have cultural traditions, which poses a puzzler for biologists wondering what makes human culture unique | Continue reading
As semaglutide-based weight loss treatments, such as Ozempic and Wegovy, become more popular, new side effects are emerging - and one is hair loss | Continue reading
Urine that has sat in the sun for a while seems to fertilise crops while warding off pests, without affecting the produce's taste | Continue reading
At the Dakshineswar temple complex in India, Hanuman langurs beg for food by grabbing visitors’ legs or tugging on their clothes – and they don’t stop until they get their favourite snacks | Continue reading
After a container ship struck and destroyed the Francis Scott Key Bridge in Baltimore, Maryland, researchers began calculating the risks of similar catastrophic incidents for other US bridges – and they’re surprisingly high | Continue reading
Cave-dwelling orb spiders have adapted their webs so they act as tripwires for prey that crawl on the walls of the caves | Continue reading
By studying the brains of autistic girls, we now know the condition presents differently in them than in boys, suggesting that huge numbers of women have gone undiagnosed | Continue reading
An eavesdropper hiding inside a black hole could still obtain information about quantum objects on its outside, a finding that reveals how effectively black holes destroy the quantum states near their event horizons | Continue reading
Paranthropus was an ape-like hominin that survived alongside early humans for more than a million years. A fossilised leg belonging to a strikingly small member of the group raises questions about how it did so | Continue reading
The rate at which the planet is warming has sped up since 2010, and now researchers say that China's efforts to clean up air pollution are inadvertently responsible for the majority of this extra warming | Continue reading
Taking aspirin was first linked to a lower risk of colorectal cancer in 1988, but the research into its anti-tumour potential has been full of twists and turns since then | Continue reading
Since the second world war, US economic prosperity and major technological developments have hinged upon the government’s commitment to funding scientific research. The Trump administration is ending that | Continue reading
The US has confirmed more than 480 measles cases across 19 states, the highest total since an outbreak in 2019 sickened more than 1200 people | Continue reading
Astronomers have used the James Webb Space Telescope to observe asteroid 2024 YR4, which earlier this year seemed to be at risk of hitting Earth in 2032. Earth is now safe, but astronomers are cheering on a possible collision with the moon | Continue reading
The long-standing question of how animals came to have an anus may have been solved by studies of which genes are active during development in various animals | Continue reading
Some researchers propose that countries should start to rack up a carbon debt once they exceed their carbon budget, obliging them to do more to draw down carbon dioxide, but the idea is unlikely to form part of international climate agreements | Continue reading
When researchers asked people to work on a computer with their phones 1.5 metres away, the amount of time they spent on their phone went down – but they just scrolled social media on their laptop instead | Continue reading
Red specks in the early universe are puzzling astronomers, but a proposed explanation suggests they are the progenitors of supermassive black holes | Continue reading
Photosynthesising microbes in soil may increase their activity as temperatures rise, offsetting some of the carbon emissions expected to be released from peatland and permafrost | Continue reading
After 34 years of searching, astronomers have finally confirmed Neptune has auroras, thanks to data from the James Webb Space Telescope | Continue reading
A quantum algorithm for solving mathematical problems related to knots could give us the first example of a quantum computer tackling a genuinely useful problem that would otherwise be impossible for a classical computer | Continue reading
The rise of large language models like ChatGPT that can churn out computer code has led to a new term - vibe coding - for people who create software by asking AI to do it for them | Continue reading
Bizarre parasitic wasps preserved in amber about 99 million years ago had trap-like abdomens that they may have used to immobilise other insects | Continue reading
An "unprecedented view" of how the body changes during and after pregnancy has revealed many long-lasting impacts on the liver, kidneys and more | Continue reading
In the past year, treatments such as Wegovy, Mounjaro and Zepbound have become household names. But there are many questions left to answer, not least what the future holds for weight-loss medications and society at large | Continue reading
From race and IQ to sex and gender, Herman Pontzer's new book Adaptable is an ambitious and enjoyable exploration of how understanding ourselves better can help us bridge divides | Continue reading
From useful nutrients like nitrogen and phosphorus to cellulose for construction, there is treasure to be mined in our sewage, says Graham Lawton | Continue reading
By opening their eyes and hearts to the many distinctive – but overlooked – urban habitats, city dwellers can reconnect with nature, says Menno Schilthuizen | Continue reading
Feedback is pleased to discover the latest research into the wine-identifying abilities of rats, but feels the rodents still have a long way to go before they are truly obnoxious to be around | Continue reading
A weatherproof box and motion-trigger camera help photographer Will Burrard-Lucas capture images of rarely seen African elephants | Continue reading
A naturalist finds a hallucinogenic mushroom with the power to cure all ailments in the animated series Common Side Effects. Big Pharma is hot on his trail in this beautifully made show, says Bethan Ackerley | Continue reading
Low-intensity steady-state cardio has been touted as a way to lose weight and put less strain on your body while exercising. Science of exercise columnist Grace Wade looks into whether it works | Continue reading
A Climate of Truth is a penetrating and enlightening analysis of the many crises we face. But it demands impossible standards of flawed human beings, finds Graham Lawton | Continue reading
The size and shape of a giraffe’s spots seem to influence how well the animals survive when temperatures get hotter or colder than normal | Continue reading
A galaxy inside a bubble may be evidence that the universe was starting to become transparent 330 million years after the big bang | Continue reading
Masaki Kashiwara has won the 2025 Abel prize, seen by some as the Nobel of mathematics, for his contributions to algebraic analysis and representation theory | Continue reading
There are many claims about the benefits of microdosing weight-loss drugs, from anti-inflammatory effects to extending longevity. Do any of them stack up? | Continue reading
Drugs like Ozempic and Wegovy have the power to block the forces driving obesity, but the knock-on societal effects may not necessarily be so positive | Continue reading
There are many claims about the benefits of microdosing weight-loss drugs, from anti-inflammatory effects to extending longevity. Do any of them stack up? | Continue reading
The race is under way to make faster, cheaper and better GLP-1 drugs that will go beyond reducing obesity levels to treating some of our most difficult conditions | Continue reading
Anecdotal reports suggest drugs like Ozempic may curb not just appetite but also impulsive or addictive behaviour, hinting at links between metabolic health and our brains | Continue reading