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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?
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Forty years ago yesterday, November 24, 1974, paleoanthropologist Donald Johanson found in Ethiopia what's arguably the most famous and important fossil of a human ancestor: Lucy.
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Last month, at the ScienceWriters2014 meeting in Columbus, Ohio, Johanson talked about the moment he laid eyes on Lucy.
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"On that eventful day in 1974 I was out, with a graduate student, Tom Gray, and we were walking back to our Land Rover to go back to camp to enjoy a swim in the river with the crocodiles and enjoy a nice little lunch.
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And I am always looking at the ground.
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I find more quarters by parking meters than anybody I know, I think.
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And you know how it is you find what you're looking for, right?
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"Because a year before the discovery a geologist had left his footprints four-to-five feet away from the skeleton, because he was looking for rocks.
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I was looking for bones.
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And I found a little piece of elbow, that little hinge that allows us to flex and extend our arm.
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And I knew from my studies of osteology, of comparative anatomy and so on, that this had to be from a human ancestor.
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"And I as looked up the slope, I saw other fragments eroding out.
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And we recovered over a two-week-long excavation operation roughly, not counting hand and foot bones, 40 percent of a skeleton.
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And this was important because first of all it broke the three-million-year time barrier.
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All the fossils older than three million years at that point in the history of paleoanthropology would fit in the palm of your hand.
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we didn't know it was a new species really until a few years later when we finally published in 1978 the name Australopithecus afarensis."
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For more, check out the blog item on our website by Scientific American's Kate Wong, who, with Johanson, co-authored the book Lucy's Legacy.
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Kate's blog is titled The Fossil That Revolutionized the Search for Human Origins: A Q&A with Lucy Discoverer Donald Johanson.
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Thanks for the minute, for Scientific American's 60-Second Science. I'm Steve Mirsky.
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1 / 19
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显示原文 =This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?
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2 / 19
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显示原文 =Forty years ago yesterday, November 24, 1974, paleoanthropologist Donald Johanson found in Ethiopia what's arguably the most famous and important fossil of a human ancestor: Lucy.
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3 / 19
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显示原文 =Last month, at the ScienceWriters2014 meeting in Columbus, Ohio, Johanson talked about the moment he laid eyes on Lucy.
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4 / 19
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显示原文 ="On that eventful day in 1974 I was out, with a graduate student, Tom Gray, and we were walking back to our Land Rover to go back to camp to enjoy a swim in the river with the crocodiles and enjoy a nice little lunch.
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5 / 19
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显示原文 =And I am always looking at the ground.
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6 / 19
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显示原文 =I find more quarters by parking meters than anybody I know, I think.
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7 / 19
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显示原文 =And you know how it is you find what you're looking for, right?
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8 / 19
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显示原文 ="Because a year before the discovery a geologist had left his footprints four-to-five feet away from the skeleton, because he was looking for rocks.
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9 / 19
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显示原文 =I was looking for bones.
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10 / 19
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显示原文 =And I found a little piece of elbow, that little hinge that allows us to flex and extend our arm.
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11 / 19
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显示原文 =And I knew from my studies of osteology, of comparative anatomy and so on, that this had to be from a human ancestor.
点击显示原文 = -
12 / 19
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显示原文 ="And I as looked up the slope, I saw other fragments eroding out.
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13 / 19
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显示原文 =And we recovered over a two-week-long excavation operation roughly, not counting hand and foot bones, 40 percent of a skeleton.
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14 / 19
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显示原文 =And this was important because first of all it broke the three-million-year time barrier.
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15 / 19
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显示原文 =All the fossils older than three million years at that point in the history of paleoanthropology would fit in the palm of your hand.
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16 / 19
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显示原文 =we didn't know it was a new species really until a few years later when we finally published in 1978 the name Australopithecus afarensis."
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17 / 19
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显示原文 =For more, check out the blog item on our website by Scientific American's Kate Wong, who, with Johanson, co-authored the book Lucy's Legacy.
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18 / 19
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显示原文 =Kate's blog is titled The Fossil That Revolutionized the Search for Human Origins: A Q&A with Lucy Discoverer Donald Johanson.
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19 / 19
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显示原文 =Thanks for the minute, for Scientific American's 60-Second Science. I'm Steve Mirsky.
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- 单句循环：关
- 单句循环：×3
- 单句循环：×5
- 单句循环：∞