gooneruk:

The report by London-based International Institute for Environment and Development (IIED) looked at 11 major cities on four continents, including London, Tokyo, New York and Rio de Janeiro.

It found per capita greenhouse gas emissions for a Londoner in 2004 were the equivalent of 6.2 tonnes of CO2, compared with 11.19 for the UK average.

In the US, New Yorkers register footprints of 7.1 tonnes each, less than a third of the US average of 23.92 tonnes.