Twenty-five years ago, Jean-Michel Cousteau traveled to the Amazon with his father to study this exotic ecosystem. In a time of accelerating environmental change, he returns to this rushing heartbeat of our planet, down the river whose waters circulate through all oceans. The Cousteau family and the Ocean Adventures team make discoveries both inspiring and shocking in this region of urgency and conflict, as well as of hope for biodiversity and sustainability.

Wednesdays, 4/2-9/08 from 8-9 p.m. ET