Going to Prison to Save Endangered Species - Nalini Nadkarni

Prisoners are surrounded by concrete walls, steel bars and a lot of bodies crammed into small spaces. These unforgiving environments lead to high stress, which often translates to violence among prison populations. To help combat prison stress, National Geographic explorer and forest ecologist Nalini Nadkarni brings nature behind bars. Nadkarni explains that convicts in 20 prisons help rebuild endangered populations of frogs, turtles, grass and mosses to heal the planet, but also themselves.