At Hampton Beach State Park, a community garden allows any coastal homeowner to take beach grass for free. Photo by Jason Moon for NHPR

As New Hampshire’s coastline prepares for a world with rising seas and stronger storms, communities and homeowners have different options, none of them simple: seawalls, raised structures, a retreat from the shoreline.

But some scientists in New Hampshire are pitching a more natural approach. All it takes is a little grass and some time.

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