Astronomers have discovered that 3I/ATLAS is carrying methanol and other chemicals that were probably important in the origin of life

There is relatively little information on the long-term health effects of tattooing, but a couple of recent studies suggest the art form might trigger prolonged inflammation

There is a widespread belief that altruism and equality drive social behaviour in traditional hunter-gatherer societies, but the truth is more surprising and complex

Albert Einstein and Niels Bohr had an ongoing rivalry about the true nature of quantum mechanics, and came up with a thought experiment that could settle the matter. Now, that experiment has finally been performed for real

From legal challenges to lesser-known apps, the teenagers of Australia are already preparing to push back against a law that will see under 16s banned from social media

Voters change their opinions after interacting with an AI chatbot – but, encouragingly, it seems that AIs rely on facts to influence people

The AI industry consumes vast amounts of energy, fresh water and investor cash. Now it also needs memory chips - the same ones used in laptops, smartphones and games consoles

Climate data and historical accounts suggest that crop failures in the 1340s prompted Italian officials to import grain from eastern Europe, and this may have carried in the plague bacterium

From a dragonfly to marine organisms, photographer Michael Benson zoomed in with powerful scanning electron microscopes to take these extraordinary shots for his book Nanocosmos

Nearly three decades since the remarkable cloning of Dolly the sheep, it has all gone quiet on the human cloning front. Michael Le Page wonders what's happening behind the scenes

Camera traps in an area of the Leuser rainforest patrolled by NGOs spotted 17 tigers in 2023 and 18 Sumatran tigers in 2024, while surveys elsewhere on the island averaged seven

Duelling prairie chickens, a snake-mimicking moth and a once-a-year sunrise at the South Pole feature in the best images from the Royal Society Publishing Photography Competition 2025

By blocking a molecule that pushes the immune system into overdrive, a vaccine protects mice from life-threatening anaphylaxis

From Mickey 17 and M3gan 2.0 to a musical about the end of the world, this was an eclectic year for science-fiction films. Film columnist Simon Ings shares his two breakout hits

From animal rivals to Jane Goodall's last thoughts, enjoy 2025's best science documentaries, says our TV columnist Bethan Ackerley

Pet owners' increasing tendency to see their animals as children rather than dogs or cats can have dire consequences. Owners, and veterinarians, should be wary, warns Eddie Clutton

What were the year's top sci-fi shows? Andor and Severance are still up there, but our TV columnist Bethan Ackerley also has some unexpected tips to share

Feedback is entertained by the commotion at the International Association for Cryptologic Research's recent elections, where results could not be decrypted after an "honest but unfortunate human mistake"

We know that pets influence our microbiome, but scientists have now found that having a dog seems to change this ecosystem in a way that could boost our well-being

More than half a million satellites are planned to launch by the end of the 2030s, and simulations suggest they will have a severe impact on space-based astronomy