Want to watch better-quality PBS Video? Sign in to access HD streaming!
Gorillas have 98% of the same DNA as humans; they're one of our closest creature cousins. Yet, their species' population numbers continue to drop. The effort to save them has a worldwide network, but it always starts locally. Ron Evans, Chief Curator of Primates and Operant Conditioning at the Cincinnati Zoo & Botanical Garden, shares how they play a key role, both in the wild and at zoos.
Upgrade Your Viewing Experience
This video is available to CallSign viewers with a Passport account. Passport gives you access to a wealth of premium content not previously available online, including full seasons of your favorite shows.