As sea levels rise, are we ready to live behind giant walls?

Read the full story at The Conversation.

Climate change, it’s fair to say, is complicated. And it’s big. One of the main challenges of responding effectively is simply getting your head around the scale of the problem.

This is not unique in the study of the physical world, of course. Scientists and economists spend a lot of time simplifying the complex real world into simpler, smaller parts, to find out how it all works. It’s one of the reasons we create “models” – mini versions of reality in which we can play, change variables, and see what happens.

We love it when we can find something out about the real world and present it in a form that is understood by other people. In environmental research, this sometimes comes in the form of the cost-benefit analysis that is understood by politicians and money-managers everywhere: spend this much cash now to make (or save) more money later.

A new study by European Commission scientists, now published in the journal Nature Communications, is a classic of this type. It looks at the costs of protecting coastal communities from climate change. The authors underline that our coasts will suffer from sea levels that are predicted to rise as much as one metre by the end of the century, as well as from more intense storms.

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