A surge in discarded laughing gas canisters at waste sites has seen a rise in explosions endangering workers’ lives, authorities warn. Operators say there has been an increase in large nitrous oxide ...

VANCOUVER — Canisters of nitrous oxide, also known as laughing gas, sold under the guise of whip cream chargers are increasingly showing up at Metro Vancouver waste facilities, and they're causing ...

Add Yahoo as a preferred source to see more of our stories on Google. Officials determined that a propane fuel canister had exploded and caused the fire to spread through the encampment and to some ...