ANN ARBOR—A carbon-nanotube-coated lens that converts light to sound can focus high-pressure sound waves to finer points than ever before. The University of Michigan engineering researchers who developed the new therapeutic ultrasound approach say it could lead to an invisible knife for noninvasive surgery.
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Natural Born Killers: Chimpanzee Violence Is an Evolutionary Strategy
ANN ARBOR—Man's nearest relatives kill each other in order to eliminate rivals and gain better access to territory, mates, food or other resources—not because human activities have made them more aggressive. That is the conclusion of an international analysis of lethal aggression among different groups of chimpanzees in Africa studied over five decades. The research appears in the current issue of Nature.
Muscular Dystrophy: Repair the Muscles, Not the Genetic Defect
ANN ARBOR, Mich.---A potential way to treat muscular dystrophy directly targets muscle repair instead of the underlying genetic defect that usually leads to the disease. Muscular dystrophies are a group of muscle diseases characterized by skeletal muscle wasting and weakness. Mutations in certain proteins, most commonly the protein dystrophin, cause muscular dystrophy in humans and also in mice.
Nearly Half of Older Adults Have Care Needs
Nearly half of older adults – 18 million people—have difficulty or get help with daily activities, according to a new study. Researchers from the University of Michigan and the Urban Institute analyzed data from a national sample of older adults drawn from Medicare enrollment files. In all, 8,245 people were included in the 2011 the National Health and Aging Trends Study. The analysis was published in the current (September 2014) issue of the Milbank Memorial Quarterly.
Dietary Recommendations May Be Tied to Increased Greenhouse Gas Emissions
ANN ARBOR—If Americans altered their menus to conform to federal dietary recommendations, emissions of heat-trapping greenhouse gases tied to agricultural production could increase significantly, according to a new study by University of Michigan researchers.
Sunlight Controls the Fate of Carbon Released from Thawing Arctic Permafrost
ANN ARBOR—Just how much Arctic permafrost will thaw in the future and how fast heat-trapping carbon dioxide will be released from those warming soils is a topic of lively debate among climate scientists. To answer those questions, scientists need to understand the mechanisms that control the conversion of organic soil carbon into carbon dioxide gas. Until now, researchers believed that bacteria were largely responsible.