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Our visual highlights from the animal world this year include a mouse caring for its companion, dolphins communicating in an unexpected way and a colossal squid caught on camera for the first time

Our visual highlights from the animal world this year include a mouse caring for its companion, dolphins communicating in an unexpected way and a colossal squid caught on camera for the first time

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

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

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

The first Denisovan skull, an ancient hunter’s toolkit and a Roman man’s brain that has turned to glass: here are our picks of the year’s most striking findings about prehistoric humans

The first Denisovan skull, an ancient hunter’s toolkit and a Roman man’s brain that has turned to glass: here are our picks of the year’s most striking findings about prehistoric humans

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

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

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?

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

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

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?

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