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1 .This is Scientific American 60-Second Science.I'm Wayt Gibbs. Got a minute?
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2 .We love our dogs, and they love us.
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3 .But it hasn't always been that way.
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4 .Dogs evolved from wolves.
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5 .(sound)
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6 .But when and where?
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7 .Some have argued that humans domesticated wolves into dogs in Asia or the Middle East about 12,000 years ago, as the rise of agriculture allowed us to settle down.
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8 .But the bones of ancient dogs, dug up from caves in Belgium and Siberia, tell a different story.
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9 .A team of geneticists extracted DNA from those bones, as well as from 49 wolves and from 77 modern dogs of various breeds.
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10 .By comparing the DNA from dogs and their ancestors, the scientists were able to reconstruct a family tree.
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11 .The work appears in the journal Science.
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12 .The geneticists conclude that dogs were probably domesticated in Europe,
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13 .most likely between 19,000 and 30,000 years ago, when we humans were still hunting and gathering, and leaving carcasses and trash piles behind.
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14 .Those wolves that overcame their natural fear of people might have had easy meals.
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15 .And now we have a better idea of just who let the dogs in.
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16 .Thanks for the minute, for Scientific American 60-Second Science. I'm Wayt Gibbs.
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