Global Warming - is it for real?

There has been heated debates (excuse the pun) regarding Global Warming in the news lately and I decided to research what people are saying about it. Here are some articles/resources that I've found that support global warming as well as debunk it. My personal opinion is that the current warming trend is part of a much longer natural cycle. I suggest you take a look at all of the following websites and judge for yourself:

National Geographic global warming fast facts (This in support of Global warming)
click here to view

Latest Myths v. Facts on Global Warming (This in support of Global Warming)http://www.undoit.org/what_is_gb_myth.cfm

Global Warming: A closer look at the numbers - this article takes a look at how man really hasn't contributed to the greenhouse effect. (Debunking global warming)http://www.clearlight.com/~mhieb/WVFossils/greenhouse_data.html

An alternative view of Global Warming Statistics: (Debunking global warming)http://www.warwickhughes.com/climate/index.htm

Debunking Modern Climate Myths (Source: Center for the Study of Carbon Dioxide and Global Change)http://www.tysknews.com/Depts/Environment/debunking.htm