You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

The Boston Globe

Ideas

12 plans for Mayor Walsh’s new Boston

A ‘necklace’ of sea walls

In dense harbor cities like Boston, planners are only now coming to grips with the scale of the changes that will be required to cope with rising sea levels. As “100-year” storms become far more frequent and surges top 15 feet, the journal Environment@Harvard has predicted that the changing climate will likely “make most of Boston briefly part of the Atlantic Ocean” at least once by 2050 and suggested the damage would cost more than $400 billion in today’s dollars.

Plans to protect big cities from the sea usually focus on offshore infrastructure like the floodgates that protect London and Rotterdam, which cost billions of dollars. But a truly smart agenda would direct that investment into the city itself, inaugurating a new era of urban resilience that protects Boston while also making it more livable and competitive.

Loading comments...

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week