"You can't think clearly and elect whom you want if you are thinking about what food you are going to eat tomorrow and where you are going to stay, " says Michael.

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Whichever way you look at it, the more of us there are, the less food there is to eat, certainly using current farming practices anyway.

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Whereas you can lower the risks of diarrhoeal diseases (which are among the most prevalent) simply by being careful with drinking water and making sure all the food you eat is cooked.

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