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Thread: Starvation due to global warming

  1. #1 Starvation due to global warming 
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    I've read that the global rise of temperature is to blame for the rise if starvation around the world. How can a few degrees warmer cause people to die in this modern world? What do you think?


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  3. #2  
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    I doubt it's happening as of yet though there might be a connection between increasing drought, lower soil moisture and crop failures.

    If however, the models pan out soil moistures will be so reduced that crop failures will be more common in our current grain belts. For example, at some model predicts the entire corn growing belt will move North into Canada leaving most of the US plains too dry. Of course we might be able to replace them with more tolerant strains yet to be developed or other crops--but with current tech its a bleak picture.


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  4. #3  
    Forum Radioactive Isotope skeptic's Avatar
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    Right. There is no credible evidence as yet of any link between hunger and global warming. I seriously doubt it will ever happen. Such predictions are based on models suggesting, not temperature rise, but drought in certain places.

    In actual fact, a reasonable degree of warming will actually increase the area of arable land. This is because of the very large land area to the far north - Canada, Alaska, and Siberia. Where there is permafrost or near permafrost, you cannot grow much in the way of food crops. With warming, this land will become available. Arctic climes are predicted to warm the most, and tropical areas the least, so the overall impact will be to increase food growing capacity.

    Of course, there is still the question of how the extra food grown in those places is delivered to where it is needed....
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    At mid latitudes water shortage is the biggest problem, there's absolutely no doubt that higher temperatures means lower soil moisture even if rain fall remains the same.

    The big problem with high latitudes is even if they become warm enough, and growing seasons long enough--they are also notoriously variable which means high rates of crop failure from bad years. Russia already has this problem. Perhaps more seriously is most high latitude areas lack top soil, glaciers having stripped most of the land during the last glacial period.
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