Artificial intelligence built by OpenAI has cracked a decades-old conjecture by Paul Erdős, which mathematicians have hailed as a monumental moment for AI in mathematics

Some people experience vivid, incessant dreams that leave them feeling exhausted the next day, with researchers calling for this "epic dreaming" to be classed as a sleep disorder

Women appear cognitively normal for almost three years longer than men after their brains start to develop Alzheimer’s disease, making it harder to diagnose and preventing early treatment

Women experience a steady rise in body temperature from their teens to midlife, which may be useful for monitoring ageing and overall health

Storing carbon dioxide in rocks while producing hydrogen from them - and perhaps even geothermal power too - could be a double win on the climate front, and several groups are trying to make it happen

Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so because their heads became so large and powerful