do not delete this answer

nnooooooo

I know it is.

This is science and what counts is the data.

"I wasn’t convinced by a person or any interest group—it was the data that got me. I was utterly convinced of this connection between the burning of fossil fuels and climate change. And I was convinced that if we didn’t do something about this, we would be in deep trouble.”

Vice Admiral Richard H. Truly, USN (Ret.)
Former NASA Administrator, Shuttle Astronaut and the first Commander of the Naval Space Command

Here are two summaries of the mountain of peer reviewed data that convinced Admiral Truly and the vast majority of the scientific community, short and long.

http://www.globalwarmingart.com/wiki/Image:Climate_Change_Attribution.png
http://ipcc-wg1.ucar.edu/wg1/wg1-report.html
summarized at:
http://www.ipcc.ch/pdf/assessment-report/ar4/wg1/ar4-wg1-spm.pdf

There's a lot less controversy about this is the real world than there is on Yahoo answers:

http://www.worldpublicopinion.org/pipa/articles/home_page/412.php?lb=hmpg1&pnt=412&nid=&id=

And vastly less controversy in the scientific community than you might guess from the few skeptics talked about here:

http://en.wikipedia.org/wiki/Scientific_opinion_on_climate_change
http://www.sciencemag.org/cgi/content/full/306/5702/1686

"There's a better scientific consensus on this [climate change] than on any issue I know... Global warming is almost a no-brainer at this point. You really can't find intelligent, quantitative arguments to make it go away."

Dr. Jerry Mahlman, NOAA

Good websites for more info:

http://profend.com/global-warming/
http://www.ucsusa.org/global_warming/science/
http://www.realclimate.org
"climate science from climate scientists"
http://environment.newscientist.com/channel/earth/dn11462

Yes, it is happening. It changes every few years and has for eons. Part of the climate change is caused by the Suns 11 year cycle.

Climate change is definitely happening and is always occurring. However, while the earth's temperature has not yet peaked, It is rising at a much faster rate than has ever happened before. There is a lot of good evidence to point to human contributions to this, from Roger Revelle's carbon measurements starting from 1958 that show a striking correlation to temperature rise, to glaciers and ice caps in the arctic that are breaking off and melting. However, there are also holes in the global warming theory, such as a lack of data, problems with existing temperature data and USHCN and GHCN's climate sensors( see www.surfacestations.org and this article http://www.heartland.org/Article.cfm?artId=22203), the reality of the ratio of human carbon emissions versus the earths output, and the fact that glacial shortening doesn't necessarily correlate with CO2 output. The bottom line is that neither side can prove the other is wrong, and the scientific and political community is locked in a stalemate that at this point will only be resolved after time tells who is right. However, I think the climate change question is a moot point. Whether or not fossil fuels and CO2 are warming the earth, WE ARE RUNNING OUT OF THEM! Peak Oil will be seen in my generations lifetime, and we have to come up with alternative energy solutions. In addition, fossil fuels spew some nasty pollution that is harmful to human health in addition to CO2. The bottom line: We might be destroying our planet, and since innocent until proven guilty has generally not worked for environmental concerns (CFC's, pesticides(DDT)) and we have to come up with alternatives to fossil fuels anyway, there is no reason to keep squabbling about what the cause is and blocking environmental legislation that is good for the environment, human health, and eventually, the economy and our way of life.

everyone believes climate change is happening. in other places, it is starting to cool while in other places, temperatures is starting to increase. its happening everywhere!

The one constant about climate is change.
Earth's climate is always changing.