How the US government's [ basic error ]( http://www.theguardian.com/environment/climate-consensus-97-per-cent/2014/aug/28/state-department-underestimates-keystone-carbon-pollution ) leads to underestimating the CO2 emissions from Keystone XL.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#29_August_2014_%28Estimated_emissions_from_Keystone_XL%29