Police in Exeter are warning of the dangers of nitrous oxide - or 'laughing gas'.
Lately they've been finding used canisters in local parks - most recently in Heavitree, but also in St Thomas.
When inhaled the gas can cause oxygen starvation to the brain - and the risk is increased if it's taken with alcohol.
Devon and Cornwall Police gets another bad report
Three out of three areas 'require improvement'
Fears for future of Torquay's custody centre
MP warns top cop about review
Will Barnstaple remain a port?
Boatowners weigh in on decisions
Divers to fix East Devon pools
Underwater experts will grout tiles
Community group snubs South West Water grant
Their application for cash was successful
Westcountry sex offender gets 18 years
Robert Squires won't get parole until he's at least 92
