HTTP:: Why Autumn Leaves Are Colored Differently in Europe and the US
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While European poets and writers have for centuries written about the beauty of the yellow canopies in autumn, their American and Asian counterparts have mostly described the foliages as having a reddish hint to them. The difference is still visible today, and botanists set out to investigate precisely why that is so. According to newly published studies, it would appear that the answer can be traced back to more than 35 million years ago, ScienceDaily informs. An international team of scientists, led by University of Haifa-Oranim Department of Science Education and Biology professor Simcha Lev-Yadun, and University of Kuopio professor Jarmo Holopainen, from Finland, suggests that the amount of chlorophyll pigment in the leaves is the source of the discrepancy, and that the moment of separation between the American/Asian and the European varieties occurred more than 35 million years ago. Details of their investigation appear in the in the latest issue of the Journal New P!
hytologist. The colors that appear in the leaves when autumn comes are not, contrary to popular beliefs, due to the fact that the leaves are dying. In the case of yellow leaves, this simple process occurs â€" as the amount of chlorophyll is diminished, the green pigment no longer retains “supremacy†over...
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http://news.softpedia.com/news/Why-Autumn-Leaves-Are-Colored-Differently-in-Europe-and-the-US-119356.shtml
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