Australia's refusal to ease coal exports has prompted a rift with low-lying Pacific island neighbours whose countries are threatened by rising sea levels.
Iceland's volcanoes spew out between one and two million tonnes of carbon dioxide each year.
Volkswagen must now reduce its emissions to avoid fines from the EU from 2020, which is set at €95 per gram above 95 g CO2/km, per car.
The gas, which gives soda its fizz and is used to package food, and even stun pigs before slaughter, is in short supply due to a high number of closures at ammonia plants that produce CO2.
Structural economic changes have allowed China to meet emission targets earlier than expected.
Europe is currently experiencing a shortage of industrial carbon dioxide.
Shipping currently accounts for 2.2% of world CO2 emissions.
Behind the glamour there is the overriding concern of increasing slide in diesel sales.