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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .When Darwin explored Saint Paul's Rocks off the coast of Brazil, he found just two kinds of birds.
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3 .He wrote: "Both are of a tame and stupid disposition...
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4 .I could have killed any number of them with my geological hammer."
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5 .Darwin's hunch was that creatures living on remote islands were less wary of predators--because in many cases, there weren't any.
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6 .And it seems he was right.
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7 .Because by analyzing dozens of past studies, researchers have found that island lizards are indeed less skittish than their mainland relatives.
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8 .That finding appears in the Proceedings of the Royal Society B.
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9 .Problem is, that mellow island lifestyle could endanger the lizards, if invasive predators show up.
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10 ."The lizards in the islands will be a lot more vulnerable."
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11 .That's evolutionary biologist Theodore Garland, Jr,, a member of the study research team.
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12 ."They will allow those new predators to approach to a closer distance,
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13 .which is going to probably greatly increase the chance that they'll actually be captured by an introduced predator."
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14 .Which suggests that, compared to mainlanders, island fauna don't stand a fighting chance ,unless we keep invasive predators at bay.
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15 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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