▽New Scientist - International News, Ideas, Innovation ●05/20 13:34 HealthWhy honing your sense of smell could keep you sharp as you ageA declining ability to detect scents is linked to conditions including Parkinson’s and Alzheimer’s. But restoring our most neglected sense might not only reduce cognitive decline – studies also show it could even reverse itFeaturesSubscriber-onlyEnvironmentIs the COP30 climate summit already in crisis, with six months to go?