Surecatch, there is an overwhelming scientific consensus that yes, global warming is for real. Two excellent consensus documents that spell out the latest in the science come from (1) the Intergovernmental Panel on Climate Change (http://www.ipcc.ch) and (2) the US National Academy of Sciences -- the National Academy has a very readable report that responds to questions about Climate Change posed by President Bush, it is online at http://www.nap.edu/catalog/10139.html?srchtop

You ask what percentage of scientists are for and against the reality of global warming. (my original post put some rough numbers to this, but the fact is I don't know). My impression from the last 10 years traveling in climate research circles is that there is a very small, but very vocal, minority of climate specialists that fall into the category of "global warming skeptics".