With stunning photos and stories, National Geographic Explorer Wade Davis celebrates the extraordinary diversity of the world's indigenous cultures, which are disappearing from the planet at an alarming rate.
Source: http://www.ted.com/index.php/talks/wade_davis_on_endangered_cultures.html

Wade Davis on the worldwide web of belief and ritual
Anthropologist Wade Davis muses on the worldwide web of belief and ritual that makes us human. He shares breathtaking photos and stories of the Elder Brothers, a group of Sierra Nevada indians whose spiritual practice holds the world in balance.
Source: http://www.ted.com/talks/wade_davis_on_the_worldwide_web_of_belief_and_ritual.html