Ebola: Outbreak sparks panic in United States
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This week, two American nurses have contracted Ebola after they helped care for a Liberian man with the disease. That's prompted panic across the United States. Next, there's a new twist in the case of the 43 missing Mexican students: it's been confirmed their bodies are not in a mass grave recently found nearby. And southern Brazil is hit by the worst drought in a century, which is now threatening the nine million inhabitants of Sao Paulo.