A gene therapy that instructs cells to produce more of an anti-ageing protein called klotho is about to be offered by a US company at overseas clinics to bypass FDA rules

A woman with severe Alzheimer's disease who hadn't spoken more than monosyllables in years began initiating conversation after a single dose of psilocybin

A spider living in the rainforests of Queensland, Australia, builds a snare trap reminiscent of a Roman-era ballista weapon that it uses to catapult green tree ants into a web 30 centimetres above

Several start-ups have tried to grow seaweed to remove atmospheric CO2, but this could affect the levels of nutrients in the ocean and hamper other CO2-sucking processes

The next generation of AI models are meant to be trained by people paid to have conversations with them, but several of these workers have admitted to New Scientist that they simply get chatbots to do it instead. This "AI inbreeding" may reduce the power and usefulness of future models, warn experts

Older mice that received a faecal microbiome transplant from younger animals went on to have improved brain plasticity, which suggests their brains could overcome a neurological condition that is typically successfully treated only in childhood