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  1. 2011 Science News of the Year: Environment

    Courtesy of Christopher Arp/USGS Arctic warming signs Climatologists pointing to the Arctic as the leading baro­meter of global change have plenty of new evidence that wholesale warming is under way. Observational data indicate that the region’s air, soils and water have warmed substantially since 2006, suggesting that the climate has established a “new normal” (SN […]

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  2. 2011 Science News of the Year: Genes & Cells

    Nicolle Rager Fuller Boons and busts via gut microbes Studying the secret lives of bacteria living in human intestines has yielded some unexpected finds. One study suggests that most humans have one of three different combinations of friendly microbes (SN: 5/21/11, p.