* The film suggests that sea levels could rise by 7m causing the displacement of millions of people. The evidence is that sea levels are expected to rise by about 40cm over the next hundred years and that there is no such threat of massive migration. | * The film suggests that sea levels could rise by 7m causing the displacement of millions of people. The evidence is that sea levels are expected to rise by about 40cm over the next hundred years and that there is no such threat of massive migration. |