Man made global warming is like religion you either believe or you don't.  The basic theory is that the Earth is warming up for one reason or another and the effects are going to be drastic, long term, and deadly for many.  There are various opinions but many agree the water will rise and weather patterns will become more severe.  Those who live on the coast risk their homes being over run by the seas depending on how far the seas rise and how far your home is above sea level.      Will the effects be so severe that food no longer grows where it used to?  Will weather patterns become so severe that areas become uninhabitable?    No one really knows what the effects are going to be or how quickly change will come if at all but those who are prepared will last the longest.  Those who are willing and capable of adapting will reap the benefits while those who fight change or refuse to accept it will fall to the side or suffer. 

The biggest concern with Global Warming for many is the effacts it will have on our resources such as fresh water and food growth.  Will resources become so scarce that it leads to civil unrest?  How about War?  Countrys and people will go to great extent to defend their natural resources.  Even more so if mother nature is going to redistribute them randomly. 

With famine, rationing and such being the largest concern for those in the future concerning global warming these are a few thing people can still do to prepare.  Global warming will long term so it's impossible to to store enough supplies such as food and water to last you and your family through the hard times.  However there are steps you can take to make those times a little less severe.