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1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
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2 .We already know human populations can get taller over time.
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3 .But a new study shows just how extreme this growth spurt can be.
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4 .Economic historian Timothy Hatton, of the University of Essex and Australian National University, examined height changes in a relatively short time period and small geographical region.
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5 .His data sample consisted of adult males around 21 years old, who were born in 15 European countries between 1856 and 1980.
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6 .The study is published in Oxford Economic Papers.
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7 .Over the century-and-a-third, average height increased by about 11 centimeters, a good half-a-head. But why?
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8 .According to Hatton, improvements in sanitation and housing reduced infant mortality and childhood diseases.
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9 .The result was healthier and thus taller children.
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10 .Other factors included increased wealth, education and social and health programs.
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11 .Smaller families, which ensured that each child had more to eat, may have played a role as well.
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12 .In general, a taller population is a marker for better health.
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13 .So congratulations, Europe, keep living large.
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14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
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