Floods Rage Toward Stricken Pakistan Province
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Cholera Follows Pakistan Floods; Six Million Face Crisis
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The prairie dog plague has led to massive prairie dog deaths, scaring nearby human communities for the last 60 years. Barbara Sax//AFP/Getty Images hide caption

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Culprit Of Prairie Dogs' Drama May Be Caught
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Positive Developments In HIV/AIDS Research
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Scientists Say A Gel Can Slow HIV Spread
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Malaria is spread through mosquitoes that have been infiltrated by the Plasmodium parasite. Associated Press hide caption

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Malaria: The 500,000-Year-Old 'Fever' That Won't Die
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