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Early Arrival of Butterflies Demonstrates Impact of Climate Change
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Early Arrival of Butterflies Demonstrates Impact of Climate Change

LONDON - Britain's astounding April, the warmest on record, has produced an astounding effect in the natural world, with at least 11 species of butterfly making their earliest recorded appearances this spring in what will be seen as the most remarkable demonstration yet of the effects of climate change on Britain's wildlife.
For several years biologists have been watching warming temperatures affect living organisms, with leaves opening, birds nesting and insects emerging earlier. But what has happened in 2007 with butterflies has been quite exceptional.