Image copyright Getty Images Scientists say they have identified the earliest signs of Parkinson’s disease in the brain, 15 to 20 years before symptoms appear. Scans of a small number of high-risk patients found malfunctions in the brain’s serotonin system, which controls mood, sleep and movement. The King’s College London researchers say the discovery could…

Image caption The driver of a black BMW veered on to the wrong side of Swain’s Lane before hitting Josh Dey A hit-and-run victim who was knocked off his bike in a hit-and-run crash in London has released CCTV footage in a bid to find the driver. Medical student Josh Dey was left with a…