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 wants to
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. reporter
robot arriving at the search zone for the missing titanic submersible. the mission to find the five people on board critical juncture as experts warn the air supply may run thought a matter of minutes. todd piro joins us with the latest. todd: the coast guard is leading the international effort to find the five passengers on board who to your point are expected to run out of oxygen just minutes from now at 7:08 eastern time that literally is seven minutes from right now. officials are unsure if those reported under water banging noises are a sign of life. we don t know what they re. it s inconclusive. the important pieces we are searching in the area where the noises were detected. todd: the search now expanded to over 2.5 miles below the surface with more vessels and special equipment joining. in crews also surveys over 14,000 square miles twice the size of the state of kentucky cut. we are learning more about the history of ocean gates expedition with reports one pass
deep sea robot. right now, officials are unsure if those reported underwater banking noises we reported n were a sign of life. with respect to the noises specifically, we don t know what they are to be frank with you. but i can tell you that it s is not sure. obviously we have a bunch of people over there, a bunch of nations looking for them, the coast guard has a bunch of cutters out there. i think recovering it will be easy. finding it is the problem. my guess is that the stress levels are pretty high in there, as the oxygen depletes, their functionality is going to decrease. so i mean, i can t think of a more miserable death, personally. we are also learning more about the history of oceangate expeditions, technical issues on six prior trips. one passenger claiming he was on the submersible and lost contact two hours, forcing an early end to the journey. and 2018 safety report detailing safety concerns, whether it met industry safety standards, claiming the company h
harvard s first black female president out after just six months on the job. a suspected israeli air strike kills three hamas leaders in lebanon, including one of the founders of the group s military wing. what it could mean as the conflict widens. a deadly collision in japan involving a passenger plane and a coast guard on its way to victims of the massive earthquakes there. we ve got a gunshot wound. major: our new series, guns in america. we spend a night at one of the nation s top medical trauma centers with a firsthand look at the impact of gun violence. you see people on their worst day, and they are on death s door. shift a few seconds from here to there, and that shift can have a big impact. google maps and ai may mean less red lights in your future. when i look at a red light, i see opportunity. opportunity to help drivers and opportunity to help the planet. major: good evening, to our viewers in the west. thank you for joining us. i m major garre