At present, greenhouse gas emissions are determined mainly by consumption patterns in cities of the developed world. Transport and buildings contribute 21% to CO2 emissions (IPCC, 2007), agricultural activity accounts for about one fifth.
Marvellous. Transport and buildings are 21%, agriculture is 20%. The former is "mainly", the latter is not?
Hell after all these posts today whatI want to know is where is the WHO headquarters, and where can I get a suitcase nuke?
WHO has never been too good with math/stats .