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around that time, scientists learned something extraordinary. whales were communicating with each other. sometimes by song over long distances. in part, because of that discovery, scientists and conservationists rallied to enact laws to protect the whales and it worked. the humpback whale population has made a remarkable comeback. now they face a host of new threats. global warming is killing off their food source and human activity is causing thousands of whale deaths a year from the stress of underwater construction noise to fishing entang amments and ship collisions. in the next hour, cnn s bill weir takes us to antarctica, a place very few get to visit to study these remarkable creatures and show us why saving the whales may also be saving the planet. because they are one of our best partners in battling climate change. reporter: those are the songs of humpback whales, flying about 15 billion miles away from earth, on the off chance intelligent life out there wa ....
50 years ago humpback whales were considered an endangered species after decades of commercial whaling decimated the population. around that same time scientists learned something extraordinary. whales were communicating with each other, sometimes by song over long distances. in part because of that discovery scientists and conservationists rallied to enact laws to protect the whales, and it worked. the humpback whale population has made a remarkable comeback. but now they face a host of new threats. global warming is killing off their food source, and human activity is causing thousands of whale deaths a year. from the stress of underwater construction noise to fishing entanglements and ship collisions. in the next hour cnn s bill weir takes us to antarctica, a place very few people get to visit, to study these remarkable creatures and show us why saving the whales may also be saving the planet. because they are one of our best partners in battling climate change. re ....
at these latitudes, the sea can be terrifying. they say below 40 degrees south, there is no law. but below 50, there is no god. at the ends of the earth is a land of extremes, home to spectacular wildlife. for centuries, people and animals have battled for supremacy. but now enemies are becoming allies. together, they face new challenges. in our rapidly changing world. you are at the mercy of the elements. this is a story of what it takes to survive. on the edge of the world . patagonia s far south is dominated by the wind. and the cold. extending below the 50th parallel, no other land mass lies so close to antarctica. to survive here takes resilience. determination, and sometimes sheer size. much of the land is just empty, wind-blasted tundra. but the sea is teeming with life. a humpback whale. this 30-ton giant has traveled all the way from its winter breeding grounds in the tropical pacific, a journey of more than 4,000 miles. on its tail is wildlife veteran fr ....
at these latitudes, the sea can be terrifying. they say below 40 degrees south, there is no law. but below 50, there is no god. at the ends of the earth is a land of extremes, home to spectacular wildlife. for centuries, people and animals have battled for supremacy. but now enemies are becoming allies. together, they face new challenges. in our rapidly changing world. you are at the mercy of the elements. this is a story of what it takes to survive. on the edge of the world . patagonia s far south is dominated by the wind. and the cold. extending below the 50th parallel, no other land mass lies so close to antarctica. to survive here takes resilience, determination, and sometimes sheer size. much of the land is just empty, wind-blasted tundra. but the sea is teeming with life. a humpback whale. this 30-ton giant has traveled all the way from its winter breeding grounds in the tropical pacific, a journey of more than 4,000 miles. on its tail is wildlife veteran fr ....
Only ones plying these waters. the steady stream of ships through the straits might drive away the whales entirely . to make his case, he needs proof that the whales are stressed, and that means taking a sample. but chasing whales in boat mace panic them. ....