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2010-05-19 14:35:16

Breathing polluted air increases stress on the heart's regulation capacity, up to six hours after inhalation of combustion-related small particles called PM2.5, according to Penn State College of Medicine researchers. Stress on the heart from exposure to high levels of PM2.5 may contribute to cardiovascular disease, said Duanping Liao, professor of public health sciences. The body's ability to properly regulate heartbeat so the heart can pump the appropriate amounts of blood into the...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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