Hurricane Sandy battered NYC 8 years ago. Since then, how has the city shored up against future superstorms? Oyster castles.

As a way to soften the impacts of a future storm, an artificial oyster reef was installed in New York City. This green infrastructure can absorb the shock of waves and decrease the amount of flooding, as well as build up the shore over time effectively reversing erosion. Environmentalists argue that this type of barrier is more cost-effective than traditional seawalls and will adapt to sea level changes over time.

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