Global warming is a fact, although it doesn't mean the world is getting warmer everywhere at the same rate. Certain areas of the globe are hit much stronger than others, and by hit stronger I mean 1-2 degrees celcius. That's all thats needed to really mess things up, its a very tightly balanced system. You might go outside in the winter and think "boy global warming is bullshit" but the fact is it's much much more complex than that. We don't notice it on a day to day basis, between below 20 C and below 21 C you wont feel any warmer, but in some other part of the world in some other eco system the difference between 1 C and -1 C can be devastating. Most theories claim the warming is part natural but for the most part man made. If only the natural warming was influencing the world's environment perhaps it could adapt quick enough to preserve itself, but the fact is with the recent rapid changes the outlook is pretty bad. Feeling guilty about this isn't the solution but the fact is we all are to some extent responsible.