Archive: 11/26/2007

Dust mite levels in Sydney are seasonal

House dust mite (HDM) allergen levels in Sydney beds are determined by the season, with new research discovering fluctuations of such magnitude between summer and autumn levels they may be sufficient to influence asthma symptoms ...

dateNov 26, 2007 in Other
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Accuracy of past hurricane counts good

Counting tropical storms that occurred before the advent of aircraft and satellites relies on ships logs and hurricane landfalls, making many believe that the numbers of historic tropical storms in the Atlantic are seriously ...

dateNov 26, 2007 in Earth Sciences
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Nanoswitches Toggled by Light

Microscopic fissures in a tiny crystal open and close—on command. Researchers led by Ahmed H. Zewail successfully used ultrafast electron microscopy (UEM) to observe nanoscopic structures at their “exercises”, as they ...

dateNov 26, 2007 in Nanophysics
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