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.
Cornwall man handed warning for disturbing dolphins
He encouraged others to do the same
10-storey Exeter student accomodation block planned
Developer wants to demolish old JobCentre
Former nightclub could become student accommodation
180 studio apartments planned for Unit 1
North Devon drug dealer jailed
He used an encrypted app to carry out his business
Investigation launched into glasses theft
More than 30 pairs have been taken
Controversial mega site for 700 Exmouth homes approved
Residents 'gutted'
