When Climate Adaptation Backfires

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In the scramble to combat climate change, so-called solutions can cause more harm. An IPCC 2022 report warns of these maladaptations.

Around the world, people are building levees, shoring up dams, digging canals and constructing infrastructure to confront the impacts of climate change. Most of these investments will likely save countless lives and protect property, but some will inadvertently add to the problems they are trying to address.

In France, dikes built to protect low-lying communities from sea-level rise have backfired. As climate change speeds erosion, the seawalls have disrupted natural beach accretion and trapped river sediment so that less of it is delivered to the coast. The expensive infrastructure must now be rebuilt — repeatedly — to keep up with the changing coastline.

Avoiding maladaptation requires a holistic approach and a long list of malleable strategies that allow us to alter course as needed, Schipper says. The old way, of taming nature with hardened concrete, is ill-suited to climate change.

 

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