Business > Foreign Business
Hunt on for climate killing gas

Peotone, United States: After finding a rusty gas canister near his midwest US home, Rick Karas checked online if it was worth anything. Incredibly, it turned out to be a coveted commodity in the battle against climate change.

His roughly basketball-sized container was filled with CFCs (chlorofluorocarbons), a potent greenhouse gas that is perfectly legal to possess but which has been globally banned from manufacture for decades.