In South Korea, it’s Teachers’ Day. The wind comes out of the west, snaps the flags, the clouds boil. My students give me a package of cookies and a note: We will always be grateful to you for your support and kindness. The Sewol ferry sinking, the deaths of hundreds of teenagers, is the only thing on the news. The girls laugh in the halls. They wear yellow ribbons to remember the dead. My facebook feed is full of wedding photos. Also advertisements. The Antarctic ice sheet has heard its death knell. It will melt, unstoppable.