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Can't see the leap from local burns to global climate change. This is certainly evidence for localized landscape use and surface burns near the cave system and/or fires in the cave system. This no new information though. Early horticulture is starting at this time, populations are settling into villages and growing. Of course they are burning more wood. I think populations were much larger than was assumed some decades ago, and Native americans were much active in controlling their landscape than was ever thought. But where does the leap to global climate change come in?
This Iceland volcano is a good example of how man-made greenhouse gases are barely a hair on the arse of global climate influences.
Something is not right. This message is just to keep things from messing up down the road