Yeast affects several aspects of beer including the foam, or head, that forms on the of the glass. If fermentation is too vigorous, too many of the foam-stabilizing proteins may be lost.
Cate Gillon/Getty Images
February 8, 2013 Yeast are demanding little critters. To make good-tasting beer, brewers have to pamper them like pedigreed pets. A new report says it's all about the microbiology. Brewers say they use science to keep their charges happy.
Twins in Malawi helped scientists discover a role the gut microbiome appears to play in severe malnutrition.
Photograph courtesy of Tanya Yatsunenko
January 30, 2013 The bacteria that live in humans' guts influence weight gain and health. By studying twins in Malawi, scientists have found that changes in this microbial community may also turn malnutrition into a fatal condition.
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May 9, 2012 While U.S. adults have relatively uniform microbe colonies in their guts, adults in Malawi and Amazonia have much more diverse populations. Scientists are still struggling with why that is and what it means.
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