A message to the climate skeptics/deniers:
1) Unless you've evaluated the observations for yourself and you understand ice core and sea/lake sediment data (oxygen isotopes, for instance) and unless you understand how gasses in our atmosphere absorb and emit radiation from different parts of the spectrum, and unless you've taken some geology to know the natural variability in the Earth's climate, and unless you've actually seen results from climate models then you aren't really in a position to question the phenomenon of anthropogenic climate change, are you? I'm not saying this to be a snob, and I'm all for being skeptical, but unless you have the technical skill and background to assess whether these scientific findings are correct, I'm sorry, but you can't be part of the jury.
2) But, luckily, there is a jury of other scientists that do scrutinize this stuff, and the ruling is overwhelming ... 97% of scientists say man-made climate change is real. "But wait", you say, "what if these scientists are conspiring together to convince the public of climate change so they can line their pockets with funding money?" I'm sorry but that's insulting. If you go to the doctor and you're diagnosed with an illness. Being a skeptic, you go to another doctor, and another, and another, and 97% of them give you the same diagnosis, do you say "my, God! it's a conspiracy that these doctors want me to be sick so they can make money treating me!" It's an insult to these scientist and the scientific process. So please, go on being a skeptic, just be a reasonable one.