Source 16

1. http://www.wired.com/science/discoveries/news/2006/01/70107 2. My source is WIRED by Yun Qian.
3. Qian's credentials are he is the lead author of the study along with other researchers from the U.S. department of energy.
4. What the sources says about the topic is China's skies have darkened over the past 50 years because of a nine-fold increase in fossil fuels which has caused haze. The haze also appears to reflect the sunlight back into space and cooling the Earth's surface which is the complete opposite of global warming. However, when the cooling mask is lifted the effects of the fossil fuels now will accelerate global warming.
5. Yes, I believe the source.
6. I believe the source because Yun Qian aling with many other researchers are doing a study on this and they are the lead researchers so they would know what they are talking about. I also believe it because you can actually see the haze in China from all the pollution if you look at some of the photos.