News tagged with food shortages

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Early warning signs of population collapse

Many factors—including climate change, overfishing or loss of food supply—can push a wild animal population to the brink of collapse. Ecologists have long sought ways to measure the risk of such a collapse, ...

Apr 10, 2013
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Zimbabwe faces crayfish crisis in water ecosystem

(AP)—Scientists in Zimbabwe say a fresh water crayfish brought from Australia is breeding out of control in the northern Lake Kariba, devouring the food sources of other fish and putting the nation's entire ...

Feb 12, 2013
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