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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

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

A galaxy inside a bubble may be evidence that the universe was starting to become transparent 330 million years after the big bang

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

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

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

GLP-1 drugs have revolutionised the treatment of obesity, but the very reason they are effective is also why it's vital to prioritise exercise when taking them

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?

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

Researchers have identified the border between quantum physics and some as-yet-unknown post-quantum realm by mathematically analysing all possible measurements of simple quantum systems

Transparent wood, made by stripping organic polymers and replacing them with a mixture of egg whites and rice extract, could be used as windows and smartphone screens

A species of houndshark called Mustelus lenticulatus makes sharp clicking noises when handled. Until now, sharks as a group were thought to be universally quiet

Women with premenstrual syndrome reported big improvements in their symptoms after taking placebo pills, despite knowing they did not contain any active ingredients

A new test of AI capabilities consists of puzzles that humans are able to solve without too much trouble, but which all leading AI models struggle with. To improve and pass the test, AI companies will need to balance problem-solving abilities with cost.

Scientists have replicated the luxurious mouthfeel of foie gras using the liver and fat of ducks reared and slaughtered normally, avoiding the controversial techniques involved in traditional production

Ciaran Martin, the former head of cyber security at GCHQ, says the UK government was "naive" to expect a request for Apple to weaken its encryption services to remain secret. He thinks governments must come to terms with the fact that uncrackable encryption is here to stay.

In the ongoing debate over the benefits and harms of smartphone use in children, initial data from a US survey suggests the devices can actually improve well-being and social connections, but social media use may be more harmful

Floating platforms of wood could draw up seawater and help it to freeze, seeding the formation of new sea ice

There's a small chance of very high warming even with moderate future emissions, according to a computer model exploring what could happen in the next thousand years

We’ve pumped huge amounts of carbon dioxide into the atmosphere that needs to be paid back. Large animals like wolves, bison and whales may already be tackling the problem