Feb 22 2011: There are over 7 billion people on the plant now... one hiccup in food production, even before CO2 changes climate, for ANY reason and we are all in trouble. As long as the stores have supplies no one will feel it but when that runs out.. I agree with Alice Tromm in as much as the numbers are huge and fairly recent in human history, we have never before faced this and we should be dealing with it now! It will create more deadly, immediate pressure, faster than warming.
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A comment on Conversation: Why do so many think that population growth is an important issue for the environment? Don't they know the facts of demographics?