LAST MARCH, WHEN CYCLONE Pam hit the tiny nation of Tuvalu, a string of low-lying coral islands in the South Pacific, it brought bodies with it. As the tide surged across a cemetery on the atoll of Nui, it roiled the ground, unearthing corpses and washing them into the streets. The Category 5 storm displaced Nui’s living residents, too. When the water receded, they returned to their homes, gathered the bones and skulls they could find, and reburied their dead.
Six months after the storm and 7,500 miles away, Tafue Lusama, the General Secretary of the Christian Church of Tuvalu, described the scene to an audience gathered at Union Theological Seminary, in Manhattan. Clicking through slides on a Power-Point presentation, he spoke about the ways climate change is altering the…