But the environmentalists we spoke to were all united in calling for an end to the world 's , and Norway 's , addiction to oil . He traveled to Norway to report on the oil industry . Visited oil rigs and tanks to find out how ` ` green '' each barrel of oil could be . For each barrel of oil produced , 1 kg of carbon dioxide is emitted ; 60 percent less than the global average .
He traveled to Norway to report on the oil industry . Visited oil rigs and tanks to find out how ` ` green '' each barrel of oil could be . For each barrel of oil produced , 1 kg of carbon dioxide is emitted ; 60 percent less than the global average .