Stern Review

Hi,

You recently made an edit to the article the Stern Review. According to the short executive summary (page vii):

'Central estimates of the annual costs of achieving stabilisation between 500 and 550ppm CO2e are around 1% of global GDP, if we start to take strong action now.'
http://www.hm-treasury.gov.uk/d/CLOSED_SHORT_executive_summary.pdf

Why did you change the figure to 2%?

Kind regards