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.
Five teenagers arrested after North Devon fire
Murder investigation underway
North Devon house fire treated as arson
One person still missing
Cornwall charity is sending aid to hurricane victims
Teams help with devastation
Huge tuna caught off Devon breaks record
What a wopper!
Devon and Cornwall Police gets another bad report
Three out of three areas 'require improvement'
