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段落1

This is Scientific American 60-Second Earth.I'm David Biello.Your minute begins now.

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Millions of roses get handed out on Valentine's Day.

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But growing roses has an environmental impact worse than many other crops.

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Start with climate change: most roses in the U.S.and Europe are imported from warmer climes.

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All that flying and trucking adds thousands of metric tons of carbon dioxide to the atmosphere.

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Then there's all the water needed to, well, water the flowers.

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And the runoff fouled by copious quantities of pesticides needed to make the roses look perfect.

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There's also the wildlife and workers poisoned by all that fumigation.

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Add to that habitat destruction where floral plantations displace native forest and wetlands.

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Finally, there's the refrigeration needed to keep those blooms fresh.

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The electricity is often produced by burning fossil fuels, and the refrigerant gases also exacerbate climate change.

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A more sustainable and, possibly, more romantic approach is to go with flowers certified by outfits like VeriFlora or, even better, whatever flowers are in season locally.

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Of course, that's not much help for those of us in wintry climes.

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Maybe try writing a poem.

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Let's see: Roses are red, violets are blue…

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Your minute is up, for Scientific American 60-Second Earth. I'm David Biello,

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