The Stockholm Resilience Centre has concluded that the number of “planetary boundaries” we are crossing has increased from three in 2009, when the Centre’s researchers first introduced the concept, to six in 2023. Crossing these boundaries means humans are changing basic attributes of planetary systems to the point of risking the future of civilization.

Among the many detrimental impacts from climate change, sea-level rise is one of the most damaging, costly, and devastating. Sea-level change poses particular challenges for coastal communities, and is becoming more prevalent in environmental law. Existing scientific literature about how sea-level change works can often be inaccessible to the people that need it. In addition, each coastal community experiences a unique combination of global, regional, and local factors that define sea-level change.

Sea-level rise is a common denominator that prompts two related but distinct types of coastal migration: (1) wealthy coastal communities that retreat inland to ensure their physical and economic security while encroaching on the neighborhoods of existing vulnerable communities; and (2) vulnerable Native Alaskan communities that relocate inland to ensure their survival while striving to retain their cultural identity.