You and I are here for a very short time. The earth is likewise here for a very short time. Let's be blunt. The whole question of global warming is a moral/religious question. Speakingly scientifically, I don't give a flip about this little blue dot called earth. I can't come up with any rational reason to care. I didn't know my great-great grandparents, and I'll probably never know my great-great grandchildren.
Even if everything you think about global warming is true, if you want to convince me that I should care about posterity, we need to move this thread to the Morality or Philosophy forum.
Again, I don't care about General Motors or Toyota Corp. or about this earth, unless you can give me a reason to care, which reason will necessarily be moral and/or religious.