Obviously Dr Michael Clark hasn' t seen the Chinese pollution in NW Vietnam where one cannot see from one side of a valley to the other and Chinese pollution masks mountains 4000m high. There is now so much pollution coming off both China and India, and this includes the huge amount of Indian pollution from domestic cooking, that it could well affect the Asian Monsoon. If this should fail for a two- year period, SE Asia and southern China dies. And our refugee- internment camp on Christmas Island will become overfull. If CO2 production from Asian energy use continues to spiral as it is doing, then sea-levels rise, typhoons get stronger, the Yellow River backs up and its levees burst, drowning several million people. Bangladesh finally disappears, displacing at least a 100 million people. The Red River delta in Vietnam and the Mekong river would also back up and flood; millions live in those two regions. Goodbye Bangkok, some of which is below sea-level and the rest not much above it, home to about 13 million.All this and more is promised and, given the tenor of David's article, is inevitable.

Increased Asian CO2 could also stop the Gulf Stream and freeze Europe and NE America.World civilization dies because of face, mobile phones, Mercedes Benzes and credit cards.The Dinosaurs did far better.

Eventually nature restores its balance, which is tough on us. Given the Chinese and Indian irresponsibility in CO2 production, and a bit of luck as my age advances, it will happen quickly enough for me to watch it happen. Should be an interesting time. Good and timely article.