This could be an awesome year for fall foliage, expert says

Tuesday, September 29, 2009 - 22:56 in Biology & Nature

(PhysOrg.com) -- For more than 20 years, Marc Abrams has studied how precipitation and temperature influence the timing and intensity of fall foliage colors in Pennsylvania. Every year during that span, there was some factor -- extreme cold or heat, drought, too much rain or insect infestations -- that threatened the brilliant hues of the display.

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