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Sciences > Atmosphere & Weather Investigating recent changes in weather patterns

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In the past several years there have been studies showing plants flowering as much as a month early, butterflies migrating weeks later than usual, changes in the timing and location of bird migrations, tropical frog extinctions, bears in Spain no longer hibernating because there is enough food to eat all winter, tree lines moving up mountainsides and up in latitude, the line of permafrost moving north, and others. But none of these are close enough or important enough to us, personally, to make us (Americans) concerned. These are all out on the fringe of our world and simply do not affect u...

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