Health Hyperactive neurons build brains in synaesthesia Red letter day( Image: William McKellar/ Brand X Pictures/Getty ) Neurons with hyperactive tendencies may help to explain the mysterious mechanisms that cause synaesthesia. The discovery could help develop treatments for other visual anomalies such as hallucinations. Grapheme-colour synaesthesia is a condition in which an individual's sense of numbers or letters is associated with different … News
Technology Cyberwar storm clouds are gathering Has the threat of cyberwar entered a significant new phase? Unpicking the burgeoning reports of activity on the digital battlefield Opinion
Dry ice performs a sublime dance See more: To see the image this article refers to, keep checking Picture of the Day on our news blog Short Sharp Science THE substance at the heart of worldwide concerns about climate change is more beautiful than most people realise. Inspired by the central role of carbon dioxide in the living economy of the … Regulars
Physics Ultimate guide to the multiverse WHETHER we are searching the cosmos or probing the subatomic realm, our most successful theories lead to the inescapable conclusion that our universe is just a speck in a vast sea of universes. Until recently many physicists were reluctant to accept the idea of this so-called multiverse. Recent progress in cosmology, string theory and quantum … Features
Christmas gifts for the rationally curious CultureLab's pick of whimsical gifts inspired by science CultureLab
Enigma Number 1674 Four months In a normal year, February has 28 days, April has 30 and January and May both have 31. Using letters for digits consistently, JAN and MAY are divisible by 31, APR is divisible by 30, and FEB is divisible by 28. Please send in the three-digit number for FEB. WIN £15 will be … Regulars
Feedback: Keeping up the alchemist tradition Keeping up the alchemist tradition ALCHEMY lives! True, its heirs are deeply split. Some moved on to the actual chemistry that grew out of the workshop technologies alchemists developed. Others chose to build on the business model, and can now be found marketing tachyon-enhanced quantum pentawater. Phil and Jane Hodgson wonder what goes on behind … Regulars