There is absolutely no proof that man is causing global warming. Millions of years ago, there was an ice age which disappeared due to a natural warming of the earth that could not have been caused by man. Think about that for a while. Could the current warming be caused by similar natural factors that caused the Ice Age to disappear?
Man is certainly polluting the environment and this should be controlled. But causing global warning? I think not. Until someone can explain to me how the earth warmed so long ago when man wasn’t around, I will continue to believe that man-made global warming is nonsense and a hoax.