Why this Pacific nation is planning its own evacuation to Australia

Tuvalu, a low-lying Pacific island nation, has begun relocating its people to Australia under a landmark climate migration deal. Rising seas threaten to make the country uninhabitable within decades, with two atolls already mostly submerged. Nearly 82% of the population has applied for the special visa, but only 280 people will be accepted each year. The Falepili Union treaty also binds Australia to defend Tuvalu from disasters and security threats, as the country braces for the slow loss of its homeland.