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…

Ollie Devoto’s try after 80 seconds was his 11th since moving to Exeter from Bath in 2016 Gallagher Premiership Exeter: (12) 17 Tries: Devoto, White, Williams Con: Simmonds Harlequins: (3) 15 Try: Hidalgo-Clyne, Walker Con: Smith Pen: Smith A lacklustre Exeter edged past Harlequins 17-15 in the Premiership. The hosts took just 80 seconds for…