^^The Maldives is such a low lying archipelago they will be among the first visible casualties of the effect of rising sea levels. The veritable canary in the coal mine for people that think this is a figment of our imagination.
That is a nice gesture on Radiohead's behalf and hope it does generate some discussion and awareness of this impending climactic shift.
Reminds me of an ongoing argument with a friend in California a few years ago, he steadfastly refused to admit global warming, and called it "weather".
I told him I saw the beginning of the climate shift in the late 70's for myself, when the ski hill I had enjoyed for 7 years no longer got snow and hasn't to this day except for the very tip of the mountain. It's a mountain bike course now and a place for tourists to take the chairlift to the top for a nice view of the Island.
Also the Rocky Mountain glaciers on the continental divide are shrinking so fast it's scary, when I was a kid a couple of them were right down to the roads, now they are kilometers up the mountainsides. It's a combination of natural events and our own contributions of greenhouse gasses, but to deny global warming is totally absurd now.