Sunday has been following the story of Takuu, a low-lying remote atoll that is sinking at an alarming rate.
Lying 250 kilometres northeast of Bougainville in Papua New Guinea, Takuu's story highlights the likely fate of millions of environmental refugees in years to come.
Briar March and Lyn Collie have made a film about Takuu's plight, which is currently in post-production. Sunday has a sneak preview of footage from the project.
You can also find out more about Takuu and the film by clicking on the links below.
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