All aboard: Prime Minister, pollution and a piece of Scotland covered in batter

COP26 negotiations have been cranked up a notch with announcements flooding in left, right and centre. Ashna Hurynag catches Boris Johnson arriving at Glasgow Central station - where she gets a tour of the UK's first hydrogen train. She speaks to Rosamund Kissi-Debrah, the mum of 9-year-old Ella, who died of air pollution, about why transforming our transport system is essential to solving climate change. Plus, while in Scotland... Ashna tries a Scottish delicacy covered in batter.