How about similar sentiments from a publication antithetical to the Daily Mail? The Guardian reported several years ago about how 'one giant container ship can

How about similar sentiments from a publication antithetical to the Daily Mail? The Guardian reported several years ago about how 'one giant container ship can emit almost the same amount of cancer and asthma-causing chemicals as 50m cars': http://www.theguardian.com/environment/2009/apr/09/shipping-pollution http://www.theguardian.com/environment/2009/apr/09/shipping-... - though that isn't focusing on CO2 necessarily, but earlier Guardian articles talk about how shipping emits twice as much CO2 as aviation, etc.