I don't know probably the same reason yahoo answers filled with stubborn minded people who don't want to take accountability for their their wasteful lives.
Global warming is a fact, stop being a lazy, mindless, American consumer.
Ben O: It certainly should not be disregarded, just because some have made an argument that global temperature data is not enough, and i agree it is not enough we still must consistently conduct research to correctly approach the situation, it does not become void data nor does it mean that it no longer supports AGW.
There are many contributing factors to the current global warming situation beyond Co2 levels. The earths natural cycles, other gases (N2O), the slight variations in the earths orbit, our own impact on the planet, solar variation, the list is endless. These are all things we must take into account, some things we can not change but some we can. It's not going to kill you to walk a little more, change a light bulb and consume a little less.
