You may want to read more than just the abstract... all they did was use a computer model to simulate the carbon cycle, rather than studying it directly in real life. The only real life data recorded was from one location (Muana Loa). That must have been why there was only about one page of discussion.
As for the economic costs... the graph you provided was for "Global Costs of Extreme Weather Events". First of all proving those events were caused by global warming would be a difficult task. Second, I don't think it should suprise anyone that extreme weather events are costing us more and more... we are populating more areas of the earth and building larger, more expensive things. Also, I'm not sure what their definition is of an extreme weather event.
I agree that new innovations will spark new sectors to the economy. Thats a given. However I said in another thread about Kyoto that the possible benefit is far outweighed by the cost. Kyoto would have an imperceptable effect on future temperatures. We would be better off putting that money towards more research and educating the public (for some reason I don't trust Bono to do it...). Then maybe we could come up with a better solution (if one is needed).
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Good thing that isn't what they're doing, then!
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Then how are they doing it? You just can't go anywhere in the world and find an ice core like in the far north/south (thats a genuine question).
I hate what we do to the environment, most of my major interests lie in it (I'm a marine science major), but the situation on global warming is not as clear as some are making it out to be. Why is the climatic cycle argument (which has come up a few times in this thread) not valid? I've seen alot of data that shows a strong relationship between sunspots/temperature, internal heat/temperature, CO2/temperature etc. They all seem to have had a consistent pattern in earths history. Right now we're living in the 4th or 5th (I forget exactly...) glacial period in earths history. Maybe its ending.
Anyways I'm tired... I'm just sick of hearing rock stars and what not preach about how the earth is doomed. If activists want to send a message, send it through some one who knows what they are talking about (eg not snoop or Akon)