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reply to post by Mianeye
Actually during ice ages there were'nt many trees either, you would think.
If you believe the scientists, much of the Northern Hemisphere, including Asia, North America, Europe etc, were covered with up to 3 km of Ice (I dont know how they figure that out, but they are scientists??).
I dont think too many trees grow under ice, do they?
The Antarctica is the driest continent on Earth, but it is covered with Ice.......but it has no liquid water or rain.....or trees. .
reply to post by dragonridr
But with all things involving global warming there's a caveat notice he said this isnt the only cause so something else causing the cooling as well i guess.
I think that is the biggest problem we face as a species for response to our changing climate. Some want to say nothing at all is happening...and it's just routine variations on a statistical norm. Well.. Hogwash. Outright on that, I say. Others want to suggest it's all about certain gasses and this always seems to come around to how certain nations in very specific example, need to do this or that. Politics as usual there, and it's as reliable as clockwork. Still others figure it's 100% natural and man can have no impact at all (I wasn't far from this point of view myself, until fairly recently) and that too, doesn't track. Some things changing, aren't changing on geologic timelines but MUCH MUCH faster and beyond what nature is generally known for in changes of any significance.
I think the truth of this lay in it being a very complex interaction of factors. Some we can control, and some we caused. Most we haven't...but it won't matter if the one we DID is the trigger that nudges other natural processes over into critical phases. Whatever the case for cause though, I think it's causes in the plural, and a variety of them. Some, I really think we haven't even discovered or realized yet. Some..very likely..in the depths of our Oceans, to watch some of what is happening and marine life's reactions to it.
reply to post by Kali74
It's been shown in ice core samples that the co2 levels were much higher in the past and we humans didn't have to do anything to bring them down to someones exceptable levels they are claiming that we need to now .Of coarse back then they didn't have the tax systems and stock exchanges to make the $$ they do now . One should ask ...did it really matter back then? ....were we almost wiped out? ..more co2 helps the plant life grow much faster with bigger yields .. seems that is a good thing ...