Is anyone on this board a climatologist? Didn't think so.
Therefore, no one here is qualified to try to draw their own conclusions. The only option is to listen to the climatologists, who have nearly unanimously said that global warming is real, caused by human release of CO2, and is the major threat to humanity this century.
Would these be the same experts who were talking about global cooling in the 1970's?
http://en.wikipedia.org/wiki/Global_cooling
Goddammit, yes, some scientists thought the Earth was cooling in the 1970's. It never got to the level of scientific acceptance of global warming though. It's a ridiculous point for you to bring up.
Scientists have asked and examined these questions thoroughly for decades. Global warming from human-emitted CO2 was first postulated over 100 years ago and has risen in acceptance by scientists ever since based on more and more data. Do you honestly believe that you are posing questions that people who actually know what they're talking about never have?