最近の研究は、ニューオーリンズが海面上昇による深刻なリスクに直面しており、内陸部への移転を検討すべきだと警告している。この研究は、沿岸へのアクセスに依存するルイジアナ州の水産業が抱える課題を浮き彫りにしている。一方で、こうした提案は地域の現実や生計を軽視しているとの批判もある。
今月「ネイチャー・サステナビリティ」誌に掲載された論文は、海面上昇が続いているため、ルイジアナ州沿岸部はすでに引き返せない地点を超えた可能性が高いと指摘している。論文では今世紀末までに3〜7メートルのさらなる海面上昇が予測されており、沿岸部からの移住に向けた早期の計画策定を促している。著者らは、ニューオーリンズが水に囲まれたベネチアのような都市になる可能性があるものの、ある程度の居住は可能であると言及している。
Building on March research revealing sea levels underestimated by nearly a foot in many coastal areas—affecting 80 million people below sea level—a new study maps accelerated land subsidence across 40 major river deltas. Subsidence often exceeds sea level rise tenfold, heightening flood risks for megacities from Shanghai to Jakarta.
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A new analysis reveals that most studies on coastal vulnerability have underestimated current sea levels by an average of 24 to 27 centimetres because they overlooked key oceanographic factors. This methodological blind spot means that flooding and erosion risks will materialize sooner than previously projected, potentially affecting millions more people by 2100. Researchers from Wageningen University highlight the need for better integration of sea-level data in climate impact assessments.
A new national assessment shows that colonization has increased Māori vulnerability to climate-driven floods, storms, and erosion in Aotearoa New Zealand. The report urges greater inclusion of Māori knowledge and authority in adaptation planning.
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Record flooding last month pushed several northern Michigan dams close to failure, with water nearly spilling over a key barrier in one city. The events have renewed calls to address the nation's aging dams amid intensifying storms driven by climate change.
A massive LNG export terminal under construction near Lake Charles, Louisiana, is projected to produce more greenhouse gas emissions than any other in the United States. Owned by Woodside Energy, the facility is expected to release over 9.5 million tons annually once operational in 2029. The project has drawn praise for jobs and investment but criticism for worsening climate risks in a vulnerable state.
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Amid a national retreat from ecological ambitions, emblematic environmental measures are becoming more consensual at the municipal level. In Paris, Les Républicains candidate Rachida Dati includes green proposals in her program for the March 15 and 22, 2026 elections. Yet, some issues remain contentious.