Octomom, Duggars primary cause of AGW: Report

Official figures show the country's birth rate went down from more than 1.8 percent in 1978 to around 1.2 percent in 2007, resulting in 400 million fewer births cumulatively.

"Such a decline in population growth leads to a reduction of 1.83 billion tons of carbon dioxide emissions in China per annum at present," Zhao said.

Window of China