I prefer to call it climate change rather then global warming. And that's what most scientists prefer to call it as well. Oddly our own polluting has somewhat fixed the warming trend via a trend of global dimming.
http://en.wikipedia.org/wiki/Global_dimming
I'm not going to sit here and argue with people all day about global warming and the causes/ effects. What I will argue is that we have one planet to live on, so maybe we should stop treating our planet like a trashcan.
http://en.wikipedia.org/wiki/Great_P..._garbage_patch
http://en.wikipedia.org/wiki/North_A..._garbage_patch
http://americanlivewire.com/wp-conte..._rad_plume.jpg
http://en.wikipedia.org/wiki/Chernobyl_disaster
http://en.wikipedia.org/wiki/Overfishing
http://www.livescience.com/4827-deva...ble-space.html
I don't care where you stand on the global warming spectrum I think we can all agree that we probably shouldn't be doing the things I shortlisted. And yet we are and more, If I were to list everything we are currently doing that is messing up the environment from an ecological standpoint there would literally be a hundred links or more to go through. And yes I am aware that Fukishima and Chernobyl were accidents caused by human error and ill conceived disaster preparation but they are 2 things that human beings did without thinking as a result Chernobly and the surrounding area's are not fit for human habitation for the next 20,000 years which is right in the middle time frame for terraforming mars.. ( between 2,000 and 50,000 years depending upon who's estimate you trust.)