davezawadi (David Stone):
The point I was making seems to have been misunderstood, if CO2 levels many times that now did not turn the Earth into Venus, why should they now be a problem? 1or 2 degrees is fine for everything presently on Earth (including Polar Bears which are thriving) and crops like higher temperatures and more CO2. Cold kills Humans, and if you read the data rather more carefully than the headlines, it is quite likely that we are beginning to enter a new Ice age. Now that really would be a problem in a few hundred years' time!
Venus has a surface temperature that would kill you instantly.
But even a rise of a few degrees C would affect farming across the world, raise sea levels to flood major cities, and leave some places that are currently populated virtually uninhabitable.
davezawadi (David Stone):
The point I was making seems to have been misunderstood, if CO2 levels many times that now did not turn the Earth into Venus, why should they now be a problem? 1or 2 degrees is fine for everything presently on Earth (including Polar Bears which are thriving) and crops like higher temperatures and more CO2. Cold kills Humans, and if you read the data rather more carefully than the headlines, it is quite likely that we are beginning to enter a new Ice age. Now that really would be a problem in a few hundred years' time!
Venus has a surface temperature that would kill you instantly.
But even a rise of a few degrees C would affect farming across the world, raise sea levels to flood major cities, and leave some places that are currently populated virtually uninhabitable.
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