Brian Yablonski from the Property and Environment Research Center (PERC) discusses how private ownership promotes conservation. At one time, 30 million bison roamed the American plains. When the number of bison fell to 1,000, ranchers moved some bison out of the common land to start private herds. The bison population is now growing. The segment also considers how private ownership has influenced the elephant population in Africa. Countries where there is private ownership have doubled their elephant population, while countries with common ownership have seen sharp reductions in the elephant population.