In 1959, Soviet geneticist Dmitri Belyaev started an ambitious experiment to study the origins of domestication -- he would attempt to breed domesticated wild foxes by selecting on their behavior alone, a process he imagined our ancestors carried out with dogs thousands of years before.
This hour, we look at the history and progress of this more-than-50-year experiment: What can it tell us about our animal companions -- and ourselves?
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