SCIENCE

The 23ft-long trackway, consisting of four three-toed footprints, two left and two right, date from 66.5m years ago The first known series of footprints from an adult Tyrannosaurus rex has been found in North Dakota by a team of scientists. The 23ft-long trackway – consisting of four three-toed…

SMD is the moisture the soil must make up until it is at capacity, with very dry conditions over most of England and Wales When the ground is thoroughly wet, after excess rainwater has run off it is said to be at field capacity. Meteorologists describe drought in terms of soil moisture deficit…

For decades physicists have been puzzling over the enigma of dark matter. We think it makes up 85% of the matter in the universe, but the mysterious substance cannot be seen or detected, and we know about it mainly through observations of the gravitational effects it has on other things. But now…

For decades physicists have been puzzling over the enigma of dark matter. We think it makes up 85% of the matter in the universe, but the mysterious substance cannot be seen or detected, and we know about it mainly through observations of the gravitational effects it has on other things. But now…

Analysis of two skeletons reveals tooth wear and traces of psychoactive substance in what may be earliest known evidence for human drug taking What may be the earliest known evidence for human drug taking has been traced to ancient Indonesian foragers who sucked on mind-altering nuts as long as…

CEOs may like to get up at the crack of dawn and go for a run, but I prefer optimising my life with lie-ins, trashy films, swearing and coffee This evening I’m going to tuck my five-year-old into bed and read her a chapter from one of her princess books, followed by a summary of research recently…

Research finds temperature and amount of hot drinks consumed heightens possibility of developing disease Drinking very hot tea and coffee triples the risk of developing cancer of the gullet, the world’s largest study of the link between them has found. The findings show that people should let very…

Key regions of the brain linked to movement, learning and emotions were affected and may lead to cognitive problems Babies born to mothers with anaemia have smaller brains, particularly in key regions linked to movement, learning and the regulation of emotion, according to a study. Researchers said…

Company behind ChatGPT says 10,000 of its AI systems cracked the Navier-Stokes problem in 88 hours OpenAI claims to have solved a major mathematics problem that has stumped humans for nearly a century after spending millions of dollars on the artificial intelligence-led endeavour. The company…

Who’s more likely to steal sweets from a child? According to science, it’s the rich. A study seemingly confirming our suspicions about the moral behaviour of the wealthy was one of the winners of the 2026 Ig Nobel prizes, which honour research that makes you laugh and then think. Science editor Ian…

From the Guardian Investigates team: Across the world, hundreds of people have come to believe they have made extraordinary scientific discoveries with AI chatbots such as ChatGPT, Claude and Gemini. Others say their AI has ‘awakened’ or is leading them to a higher spiritual realm. The Guardian…