Absolutely nothing. Just make sure we don't pollute our local areas and adopt cleaner energies when it is financially feasible for companies, and the Earth will take care of the rest. The fact is most of the people who push global warming, especially the bureaucrats who alarmists seem to want to have handle trillions of dollars to do something about it, after they have already wasted billions/trillions of dollars on "wars" on things, with nothing to show, don't actually believe it.
No one is saying the world will end in 12 years.
Thats just you over exagerating.
Every 1 degree of warming we get over the next 100 years, will result in 2 meters or more, sea level rise.
The scientists expect that temp will rise ~3-4 degrees over the next 100 years.
That means sea levels rise about 6 meters.
This results in less space to live on, world wide.... and less area to farm, ect.
This wont cause the human race to die out, or whatever silly thing your imagineing.
It ll make it harder to live though, and will rise prices on foods.
Necro-bump this 2020: http://gamrconnect.vgchartz.com/thread.php?id=229249
Bumb in 2021: http://gamrconnect.vgchartz.com/post.php?id=9047071