Can zoos actually save species from extinction?

For thousands of years, native Takhi horses roamed the steppes of Central Asia. But by the late 1960s, their extinction seemed inevitable. To prevent this, scientists and zoos started a breeding program and soon began releasing new generations of Asia's ancient wild horse back into their native habitat. Nigel Rothfels explains the twists and turns of this complicated conservation effort. [Directed by Anna Benner, narrated by Addison Anderson, music by Raphael Tschernuth].