Drowning island nations: 'This is how a Pacific atoll dies'

President of the Marshall Islands David Kabua addresses the 77th session of the United Nations General Assembly, at U.N. headquarters on September 20, 2022. [AP Photo]

While world leaders from wealthy countries acknowledge the "existential threat" of climate change, Tuvalu Prime Minister Kausea Natano is racing to save his tiny island nation from drowning by raising it 13 to 16 feet (4 to 5 meters) above sea level through land reclamation.