Shipping vs Airfreight revisited: Some more considerations

if the same amount of freight was shipped by air or by sea, which would produce more greenhouse gases? It seems, looking at the numbers, that shipping comes way ahead of airlines on this count. When this author was working out a carbon offset scheme for a previous employer, using Climate Care's calculations, shipping 1.5 tonnes of product by ship to the UK created 0.124 tonnes of CO2, while shipping only 0.5 tonnes of the same product by air created 4.5 ... Full Story »