The issue focused on at the 2012 scientific meeting of the American Geophysical Union  in San Francisco.The issue was about how to deal with the expected effects of climate change.The idea is that we will all have to deal with it in some way. And that we will have to change our behaviour.It's a human problem. It's a matter of life and death. And it's a matter of life and death for all of us.This is the main message of the meeting. It's not the