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Posted July 31st, 2009 in health

Boulder, CO, USA - GEOLOGY studies include some curious associations: air hockey and plate tectonics; calcite and Earth’s orbit; Columbia River Flood Basalts and the Congo Fan; and rock hyrax middens and global climate change. Also in Geology: briny eruptions on Mars; the only basin known to have both a marine and terrestrial P-T boundary; a major Silurian fish die-off; and mapping naturally occurring asbestos in the Sierra Nevada. GSA TODAY illustrates the Klondike goldfields and megafauna of Beringia.

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Posted July 30th, 2009 in health

July 30, 2009—A study published online ahead of press in the Gerontology Society of America’s Journal of Gerontology: Medical Sciences reports that the condition of frailty in older adults is associated with a critical mass of abnormal physiological systems, over and above the status of each individual system, and that the relationship is nonlinear. This research is the first evidence that frailty is related to the number of abnormal physiological systems, rather than a specific system abnormality, a chronic disease, or chronological age. It suggests significant alterations in system biology with aging, and underlying frailty. Clinical implications are that prevention and treatment may be more likely to be effective if any given intervention improves multiple systems, not just one.

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