I'm a Geography Major at Texas State University, which is also the #1 school for geography in the country.
According to my professors, global warming is a crock of shit. According to scientific data, we've been warming for thousands of years.
Granted, that warming dates back to the last ice age, which from what I've been told, we are unknowingly within a 1000 years of the next ice age, which means sometime in the years to come our temperature will peak and then lower until the next ice age starts.
We also know that most of the US was covered by water at one point or another. From the guestimations, the ice age will come about similar to the events in the movie "Day After Tomorrow" The polar caps will slowly melt away enough water that the water level will rise significantly covering most of the United States.
Who knows how much will be covered or how long, but it will cause weather patterns to drastically change and eventually cause massive cold fronts and ice storms beginning the next ice age. All we know is that the last ice age covered as far south as Ohio
This can all be contested up and down left and right, but nobody really knows what will happen. There are actually many theories on the issue, none however are covered by the political "geniuses" that seek power.
just my 2 cents...