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2011-02-22 07:10:00

Warmer temperatures and later autumn frosts have been the main sources for why the ragweed allergy season in North America has grown two to four weeks longer than usual, according to researchers. Northern regions of the United States and Canada have seen a dramatic rise in the length of the allergy season between 1995 and 2009, said researchers, who published a report in Tuesday's issue of the Proceedings of the National Academy of Sciences. Saskatoon, in Saskatchewan, Canada had the...


Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.