段落1
This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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The meek may not just inherit the Earth, they could help keep the planet cool.
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The meek in this case being ants.
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For a quarter-century, geographer Ronald Dorn of Arizona State University and his students have studied how ants, termites and tree roots affect rock weathering.
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Rocks like plagioclase and olivine that contain calcium and magnesium naturally absorb carbon dioxide to become limestone or dolomite.
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The more rock that's exposed, the more CO2 gets trapped.
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And ants apparently greatly speed up that process.
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At Dorn's six test sites in Arizona and Texas, eight different kinds of ants were found to accelerate the absorption of atmospheric CO2 by as much as 335 times compared with ant-free areas.
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The research is in the journal Geology.
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Exactly how ants enhance this carbon dioxide trapping remains unclear.
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The activity could even be due not to the ants, but to the microbes they carry.
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Regardless, there are a lot of ants on Earth, as many as 10 trillion individuals by one estimate.
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Dorn even speculates that the proliferation of ants some 66 million years ago might be why this recent Cenozoic era has been, until very recently, so much cooler than earlier epochs.
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Aesop gave ants a reputation for being hard workers.
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A lot of that effort may have been for a moderate climate's benefit.
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Your minute is up, for Scientific American 60-Second Earth. I'm David Biello,
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1 / 16
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显示原文 =This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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显示原文 =The meek may not just inherit the Earth, they could help keep the planet cool.
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3 / 16
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显示原文 =The meek in this case being ants.
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4 / 16
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显示原文 =For a quarter-century, geographer Ronald Dorn of Arizona State University and his students have studied how ants, termites and tree roots affect rock weathering.
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5 / 16
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显示原文 =Rocks like plagioclase and olivine that contain calcium and magnesium naturally absorb carbon dioxide to become limestone or dolomite.
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6 / 16
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显示原文 =The more rock that's exposed, the more CO2 gets trapped.
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7 / 16
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显示原文 =And ants apparently greatly speed up that process.
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8 / 16
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显示原文 =At Dorn's six test sites in Arizona and Texas, eight different kinds of ants were found to accelerate the absorption of atmospheric CO2 by as much as 335 times compared with ant-free areas.
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9 / 16
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显示原文 =The research is in the journal Geology.
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10 / 16
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显示原文 =Exactly how ants enhance this carbon dioxide trapping remains unclear.
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11 / 16
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显示原文 =The activity could even be due not to the ants, but to the microbes they carry.
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12 / 16
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显示原文 =Regardless, there are a lot of ants on Earth, as many as 10 trillion individuals by one estimate.
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13 / 16
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显示原文 =Dorn even speculates that the proliferation of ants some 66 million years ago might be why this recent Cenozoic era has been, until very recently, so much cooler than earlier epochs.
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14 / 16
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显示原文 =Aesop gave ants a reputation for being hard workers.
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15 / 16
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显示原文 =A lot of that effort may have been for a moderate climate's benefit.
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16 / 16
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显示原文 =Your minute is up, for Scientific American 60-Second Earth. I'm David Biello,
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- 单句循环：关
- 单句循环：×3
- 单句循环：×5
- 单句循环：∞