Plants the Cure?

Here is a National Geographic video clip. I wanted to share with you, so everyone can see how intelligent these kinds of people are. The knowledge they have within them, which is soon going to become extinct, is incredible. They know everything about the land they have came to live on, and know which plants hold the power to cure disease and sickness. We have fallen away from these kinds of treatment which have been successful throughout mankind, think about it, its only been so long since we have invented medicines, what was done before this? These kinds of treatments which have worked forever are now becoming extinct as our elders pass away with the knowledge.