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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

In Jack London's The Call of the Wild, a pet dog named Buck winds up in the Yukon,

where he succumbs to his desire to return to his wild cousins, the wolves.

It's hard to say no to that call, isn't it, Buck?

It's all right, boy. Go ahead.

Of course, Buck himself was the descendant of wolves,

wolves that lived more than 10,000 years ago.

At this time, people would have been hunting and gathering.

Laurent France, a geneticist at the University of Oxford in the UK.

At the time, he says, humans roamed across Eurasia. They would eat and throw scraps around their settlement, which attract wildlife. Wildlife like wolves. Over time, a split would

have appeared in wolf populations, he says, those wolves that feared humans and those that didn't.

So this would have facilitated, I think, the domestication process. At which point,

humans deliberately took wolves as pets. But that domestication process, Franz says, may have

happened more than once, first in the West, in Europe, and again in the Far East, in Asia.

Franz and his colleagues analyzed the DNA from a 4800800-year-old Irish dogs' earbone,

along with the genomes of hundreds of other modern and ancient dogs.

After building a family tree, they determined that dogs could have been first domesticated in Europe,

...