New York Times: Let me state at the outset that I am among those who believe that no political issue today matters more than the changes to our climate, geography and environment. Apparently the Samoan Lemi Ponifasio, whose “Requiem” received its American premiere at the Rose Theater over the weekend as part of the Mostly Mozart Festival, feels the same way. His work responds, we are told, to the slow disappearance of the Kiribati islands, home to six of the dancers in Mr. Ponifasio’s company, …