Yellowstone Bison Made a Stunning Comeback. Now, After 120 Years of Conversation, The Bison Form a Single Breeding Population

American bison symbolize resilience, and today, their thriving population represents humanity’s greatest conservation story. In the 16th century, around 30 million bison roamed the grasslands across the US, but widespread poaching wiped out over 99 percent of their population, and by the late 19th century, only 325 were left. Just 23 bison roamed Y...