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To: GROUND ZERO™ who wrote (2105)	7/22/2001 8:35:45 PM
From: Moominoid	Respond to of 12411

On the dollar siliconinvestor.com How come Earth lost so much carbon dioxide while the two adjacent planets, Mars and Venus, still have an atmosphere comprised of 95% carbon dioxide? I find this odd..... Life on Earth is largely responsible for sucking carbon dioxide out of the atmosphere. Things got so cold that we got the ice ages. Now it seems that Nature invented people to throw lots of carbon into the atmosphere and warm things up again. That's what Gaia would say I suppose? However, at least now, it seems that if we stop throwing carbon into the air it will all get sucked out again in a century or two and head back into another ice age. At the moment we are putting too much carbon per year into the atmosphere, though the natural system is responding to that too. Most of the fossil fuel carbon emissions are being absorbed and absorption has increased rapidly over the last century. Have a look at this: cres.anu.edu.au David