Well, if you want proof the Earth is warming: When me papaw was growing up, it snowed in Knoxville every winter, and very much. It was on the ground most of the year. We actually had white Christmases. Now, we usually start getting cold weather aboot January, and maybe one rarely two snows a year. These usually last one day or less, and are maybe and inch deep. I can see that the Earth is warming. I can also see that the global climate is changing. Just from the last 50 years. I know that many species have went extinct in that amount of time. Is this not sending up red flags? Many of these species have went away due to habitat loss, and a few due to non native species. But many have gone because of unknown reasons, and we have found now that some of those reasons are warmer temperatures, causing many processes to change. Global warming is occuring, and as it occurs, it gets faster. The reason being stated above, the permafrosts melting, releasing methane and CO2, and it gets warmer, melting more permafrosts, releasing more gases, and it continues in this way. But humans are contributing to these affects by adding more CO2 from the fuels we burn, and making these changes occur dramatically faster. Is global warming occuring? Yes, it is. Is this extremely evident? Not yet, but it will become more so as time goes on, and very soon. Even the scientists who once denounced global warming are beleiving it now, just as everybody with some sense and the ability to think are.