Press TV: Carbon dioxide is emitted by burning fossil fuels such as coal, oil and gas. China, one of the world’s leading emitters of carbon dioxide, has blamed developed countries for causing the catastrophic global warming. Chinese President Hu Jintao said Monday that as a developing country, China should not be expected to cut emissions of greenhouse gases, shifting the responsibility to developed countries. The World Bank has reported that 16 of the 20 most polluted cities in the …