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Artemisinin, also known as QingHaoSu in Chinese, was discovered by Chinese scientist Tu Youyou. She received the 2015 Nobel Prize for Physiology and Medicine for the drug's discovery by her team more than three decades ago. In her speech at the Karol

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An analysis by the Associated Press has indicated an Amtrak train in Philadephia was traveling about 107 miles per hour as it approached the curve and crashed. The speed limit was 50 miles per hour. At least 7 people were killed, 2 hundred others wer

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Wall Street analysts searching for reasons for the U.S. stock market's sharp swings in early August point to high unemployment, the European debt crisis and other basic economic problems. But some also suspect what is known as high-frequency trading,