Omg. Let me spoon feed you credible sources. Jpl.com for one. And also peek at Arizona tech. You're welcome and your gonna be surprised. Here's one from way back. http://news.nationalgeographic.com/news/2007/...arming.htm
Keep your Google junk to yourself. Come back with scientific fact and links! Global warming isn't totally man made. By the way, one single volcanic eruption gives off more greenhouse gases than the whole entire industrial revolution. So chew on that fact as well.