Pecan Acres in Louisiana has flooded 17 times in the past 30 years. Residents of 'Flood City' are finally moving to higher ground.
Communities globally are already engaged in the thorny process of relocating because of climate change. Experts say we need to talk about a managed retreat now, so that it doesn't become a nightmare.
Rising sea levels could be an opportunity for social change – or a dystopian hellscape.