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This is Scientific American's 60-Second Science. I'm Erika Beras. Got a minute?
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Southern Blacks who migrated north during the Jim Crow era may have avoided some social ills and done better financially than their counterparts who stayed behind,
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but they were also more likely to die sooner.
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That's according to a study in the journal American Economic Review.
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In what historians call the Great Migration, some six million Blacks moved from the rural South to largely urban parts of the North and West.
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The period is considered to extend from 1910 to 1970.
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For the study, researchers looked at Social Security records of one million of the migrants born between 1916 and 1932 in eight states in the Deep South.
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They found that if a black man lived to age 65 and remained in the South, his chances of reaching 70 were 82.5 percent.
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If he migrated, those chances went down to 75 percent.
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For black women who lived to 65, there was a likelihood of 90 percent that she would live to 70 if she remained in the South.
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If she had migrated, the odds of an additional five years of survival fell to 85 percent.
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The reasons for the decreased longevity in the North remain unproven.
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But records show that migrants died at higher rates from cirrhosis and pulmonary illnesses, which are linked to drinking and smoking.
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The new Northerners may also have been affected by industrial pollution, cold weather and the contagious diseases that tend to accompany urban population density.
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Thanks for the minute, for Scientific American's 60-Second Science. I'm Erika Beras.
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1 / 15
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显示原文 =This is Scientific American's 60-Second Science. I'm Erika Beras. Got a minute?
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显示原文 =Southern Blacks who migrated north during the Jim Crow era may have avoided some social ills and done better financially than their counterparts who stayed behind,
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显示原文 =but they were also more likely to die sooner.
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显示原文 =That's according to a study in the journal American Economic Review.
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显示原文 =In what historians call the Great Migration, some six million Blacks moved from the rural South to largely urban parts of the North and West.
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6 / 15
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显示原文 =The period is considered to extend from 1910 to 1970.
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显示原文 =For the study, researchers looked at Social Security records of one million of the migrants born between 1916 and 1932 in eight states in the Deep South.
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8 / 15
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显示原文 =They found that if a black man lived to age 65 and remained in the South, his chances of reaching 70 were 82.5 percent.
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9 / 15
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显示原文 =If he migrated, those chances went down to 75 percent.
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10 / 15
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显示原文 =For black women who lived to 65, there was a likelihood of 90 percent that she would live to 70 if she remained in the South.
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11 / 15
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显示原文 =If she had migrated, the odds of an additional five years of survival fell to 85 percent.
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12 / 15
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显示原文 =The reasons for the decreased longevity in the North remain unproven.
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13 / 15
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显示原文 =But records show that migrants died at higher rates from cirrhosis and pulmonary illnesses, which are linked to drinking and smoking.
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14 / 15
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显示原文 =The new Northerners may also have been affected by industrial pollution, cold weather and the contagious diseases that tend to accompany urban population density.
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15 / 15
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显示原文 =Thanks for the minute, for Scientific American's 60-Second Science. I'm Erika Beras.
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- 单句循环：关
- 单句循环：×3
- 单句循环：×5
- 单句循环：∞