Well, yes the earth is warming up when compared to the very short period in earths life. So, you could look a graph like this and say "
Wooo we're doomed!":
However, while humans do contribute a lot to to "greenhouse gases" and whatnot. It really doesn't seem to be that big of a deal. For example cows alone produce almost as much CO2 as cars around the world. All animals produce these gases. There are natural phenomenon that produce massive amounts of greenhouse gas.
That said, when you look at estimated earth temperature trough much longer timescale, the image changes completely:
Looking at this graph, everything seems rather normal, doesn't it?
So.. my
personal opinion is that this whole global warming thing is just bunch of reasons for government and corporations to both invest taxpayers money into such cause as well as sell products to people that are bought into that... You know, stuff that has "bio" or "eco" infront of it and cost triple. Or even worse - Toyota Prius. Hate that thing.
So yeah... even though floods and ice ages and such might be very uncomfortable and tragic, I really doubt they are caused by humans so much as they'd like us to believe. It's just a natural cycle of earth.
I think establishments are doing much, much more harm to our planet with other activities.