When the water rises, whether from heavy rains or rising seas, communities have a few options: reinforce flood-threatened homes, rebuild after the water recedes, or—in places where the threat of repeated floods and even more damage is increasing—leave. And while leaving may feel synonymous with defeat, more cities and states are interested in encouraging people to leave risky floodplains—a process called managed retreat. FEMA offers a buyout program that usually involves offering homeowners money to encourage them to move elsewhere. New York Times reporter Christopher Flavelle and University of Delaware social scientist A.R. Siders describe some of the different ways cities and states have attempted the process: from Staten Island residents who took buyouts after flooding from Hurricane Sandy, to Louisiana’s new statewide plan for strategically targeting high-risk areas. But how can managed retreat go wrong? New research in Science Advances from Siders and her colleagues has found that it’s often rich counties that apply for FEMA money, and they often use it for buying out poorer residents—leading to questions of whether resources or opportunities are being distributed equitably. Jola Ajibade, a geographer at Portland State University, expands these questions to the global scale: In Lagos, Nigeria, managed retreat offers no financial incentive to people being asked to leave. And in Manila, Philippines, people are offered new homes, but aren’t given a way to earn a livelihood. Finally, with enough planning, can retreating retain the fabric of an entire community? In Sidney, New York, neighbors have been waiting eight years trying to move together to higher ground—and they’re still caught up in red tape. The planned relocation of a Native American community on Isle de Jean Charles, Louisiana, has hit roadblocks as well. But small Midwestern towns fleeing massive river floods have tried the same, and seem to be thriving decades later: see Soldiers Grove, Wisconsin, and Valmeyer, Illinois. Lehigh University anthropologist David Casagrande explains why collective community planning may end up being a key factor in retreat that leaves peoples’ lives and livelihoods most intact. At a United Nations climate meeting in Poland last year, President Trump’s advisor on energy and climate change didn’t advance a forward-thinking plan to tackle climate change, but instead extolled the virtues of natural gas and even coal—one of the dirtiest fossil fuels. So, in the absence of meaningful federal policy on climate change, a grassroots effort by 435 U.S. mayors seeks to solve the climate problem, starting at the local level instead. Emily Atkin, who writes the HEATED newsletter about the climate crisis, talks about that and other climate policy stories in the news, such as the lack of climate questions at the Democratic debate and the candidates’ views on punishing fossil fuel companies; Google donations that fuel climate science denial; and the Department of Agriculture’s lack of assistance for farmers dealing with increasingly extreme weather. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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