For anyone who is still open-minded enough to consider all the facts, I'd suggest reading the information on the following site:
Facts about Climate Change Science, truth from consensus and climate change skeptics
From what I can tell the author is a respected scientist, serving on IPCC studies, government agencies, UN committees, etc. All facts he presents are supported by links and references. If something is his opinion, he states it as such.
The one thing that struck me the most was a question he raises:
Is global warming really that bad?
Read the info on the site and see why that question is asked. Especially those of you up north (or down south in the Southern hemisphere), where each winter cities clammer for ways to keep the homeless and shut-ins from freezing to death.
Here's something else to consider:
The extra CO2 is coming from us using fossil fuels. The same people warning about the dire consequences of global warming are also telling us we're running out of fossil fuels, with maybe 20 years left of current known supplies used at currently increasing rates. The global warming alarmists are basing their calculations on a continued use of fossil fuels for another 50 years or so. Where are we getting those extra 25-30 years of fossil fuels? Aren't we running out? So if all else fails, won't we run out of fossil fuels before we can reach that terrible level of destruction predicted to occur in 50 years? Plus, as supply decreases, prices will increase. Market conditions will slow the use of fossil fuels significantly as we go along, forcing us to change habits and find alternative fuels and energy. So trying to project out what will happen in 50-80 years based on something being caused by a resource expected to only last 20-30 years is also a bad piece of math and analysis.