The Pacific Islands are scattered across a vast area of ocean, with some of the clearest waters in the world, and pristine beaches and rainforests. They are a magnet for tourism, which is vital for many of the countries’ economies. But the region’s travel industry, and those who rely on it, are increasingly fearful of the impact of continuing climate change. “Pacific Island leaders have declared climate change as the foremost threat to the livelihoods, security, and well-being of Pacific communities,” says Christopher Cocker, the chief executive of the Pacific Tourism Organisation. “Without immediate and innovative action, the future of...