She asks many patients to rate their hunger and thirst while they are eating.

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The world is hurtling towards population overload, placing billions of people at risk of hunger, thirst, lack of energy and slum housing.

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According to the World Bank, some 200 million more people are suffering from extreme poverty, hunger or thirst as a result of the crisis.

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Now, a study has uncovered a third part of the brain that, at least in mice, shows positive signs of neurogenesis: the hypothalamus, associated with body temperature, metabolism, sleep, hunger, thirst and a few other critical functions.

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With four full days dedicated to food and drink, expect tons of opportunities to satisfy your hunger and quench your thirst.

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For more than 90 days until they were picked up, they were blown about the Pacific, enduring the torments of thirst, hunger and hallucination, drinking their own urine and finally succumbing to cannibalism.

ECONOMIST: The cannibalism of the sea

That alone produces an extraordinary economic distortion: between 1992 and 2000 the number of colleges in Russia increased by 75%, but many of them, education experts say, are of poor quality, there to satisfy their students' hunger for staying alive as much as their thirst for knowledge.

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The thirst for satire dates back to Jonathan Swift and beyond and, in recent years, our hunger for laughs about the news has propelled the popularity of SNL's "Weekend Update, " The Daily Show with Jon Stewart and The Colbert Report.

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