‘Whale poo has massive value’: CNN reporter explains why

CNN’s Chief Climate Correspondent Bill Weir follows the humpback whale migratory journey from Antarctica all the way to the coast of Colombia. “What Whales Tell Us” premieres on Sunday at 8pm ET/PT.CNN’s Chief Climate Correspondent Bill Weir follows the humpback whale migratory journey from Antarctica all the way to the coast of Colombia. “What Whales Tell Us” premieres on Sunday at 8pm ET/PT.