In a stunning reversal, Disney has changed tack with regard to safeguarding its copyrighted characters from incorporation into AI tools – perhaps a sign that no one can stem the tide of AI

White-sided dolphins seem to help killer whales "scout" and catch Chinook salmon near Vancouver Island, then eat the leftovers

People are often diagnosed with multiple neurodivergencies and mental health conditions, but the biggest genetic analysis so far suggests many have shared biological causes

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 per cent of sun-like stars

Urban populations in southern Britain experienced a decline in health that lasted for generations after the Romans arrived

The world’s biggest emitter of carbon dioxide is on the cusp of a turning point that could herald the beginning of a global decline in fossil fuel use

This Changes Everything columnist Annalee Newitz on how AI-generated content went mainstream in 2025

Biologists poured cold water on Colossal Biosciences’ claim to have brought the dire wolf back from extinction, and some worry the overblown headlines will undermine conservation work

Big AI firms have built their models by hoovering up copyrighted material from the internet as training data. They say this is legal, but copyright holders disagree - and this year they hit back in a major way

Field Notes From Space-Time columnist Chanda Prescod-Weinstein on how comets grabbed the headlines in 2025

Scientists found a way to let people perceive an intense blue-green hue unlike anything they had seen before – and the technique could help people with colour blindness

The Trump administration has targeted everything from public health to space missions for funding cuts, bringing an end to the longstanding US policy of scientific pursuits as a path towards progress and economic prosperity

A bizarre Christmas dinner invitation, some mysterious carol singers and even a spot of charades. Can you solve all 12 of our unique festive riddles?

We knew that GLP-1 drugs like Ozempic and Wegovy did more than just help control type 2 diabetes and aid weight loss, but the extent of that potential really came to light in 2025

A building-sized asteroid had a 1-in-32 chance of hitting Earth at its peak, but astronomers soon found there was zero chance of it impacting the planet

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today? 

Though there were setbacks on climate change and funding for science this year, there was still plenty of amazing discoveries to marvel at

There are a host of celestial events to get excited about next year – including a total solar eclipse. Abigail Beall is lining up her calendar

Scientist and photographer Felice Frankel has zoomed in on everyday occurrences with her camera for her new book, Phenomenal Moments, which reveals the hidden science in our daily lives

Neuroscience columnist Helen Thomson on how she discovered a host of evidence-based ways to keep her brain healthier in 2026