The World Health Organization estimates about two million people die prematurely every year due to air pollution, more than half in developing countries.

VOA: standard.2009.03.23

In developing countries, the main source of water pollution is not stormwater,but waste water.

VOA: standard.2010.08.04

But US emissions cuts look much more impressive if you count cuts in agricultural pollution, the contributions to preserving forests in developing nations and buying emissions allowances from poor countries.

BBC: Climate chief's pledge on energy