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Latest Cynthia Beall Stories

Convergent Evolution Linked To Adaptation To High Altitudes
2012-12-08 08:00:16

April Flowers for redOrbit.com - Your Universe Online A shared biological adaptation enables highlanders in both Tibet and Ethiopia to thrive in the low oxygen of high altitudes. A new study from Case Western Reserve University reveals that the ability to pass on this trait, however, appears to be linked to different genes in the two groups. The shared adaptation is the ability to maintain relatively low levels of hemoglobin for high altitudes. Hemoglobin is the oxygen-carrying protein...

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2010-06-08 09:10:00

A new study pinpoints the genetic changes that enable Tibetans to thrive at altitudes where others get sick. In the online edition of Proceedings of the National Academy of Sciences, an international team has identified a gene that allows Tibetans to live and work more than two miles above sea level without getting altitude sickness. A previous study published May 13 in Science reported that Tibetans are genetically adapted to high altitude. Now, less than a month later, a second study by...


Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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