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1 .This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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2 .De-extinction.
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3 .What if plants and animal species wiped out of existence could be brought back?
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4 .That's the novel notion springing from recent advances in synthetic biology.
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5 .The idea is simple.
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6 .Find samples, like the mummified passenger pigeon discovered recently in a museum desk drawer, and collect its DNA.
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7 .Compare said DNA to that of its closest living relatives to see what specific genes make a passenger pigeon unique.
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8 .Then splice those crucial genes into the living relative's DNA strands to produce a genetic copy of the extinct animal.
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9 .Resurrection.
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10 .The restoration potential is not limited to plants and animals that we have just recently eliminated.
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11 .We could also potentially bring back species like woolly mammoths or saber-tooth cats.
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12 .Not dinosaurs though, since DNA has a half-life of just 521 years or so.
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13 .Of course, successfully bringing back the mammoth might also require restoration of its habitat,
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14 .so it has a home to roam.
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15 .But even without the reappearance of charismatic megafauna, such techniques will find uses from agriculture to injecting a bit more genetic diversity into dwindling populations of endangered species.
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16 .The biggest contribution of the new biotechnology may not be de-extinction, but preventing extinction in the first place.
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17 .Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.
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