How do you like your coffee? Personally, I happen to enjoy it with milk, a dash of brown sugar, and a depressing reminder of an impending environmental calamity. Good thing there's the Global Warming Mug, then, which shows you what the world's coastlines would look like if (or "when," depending on your tendency for pessimism) the polar ice caps should melt. Empty, the mug sports regular continents; full of steaming hot java, it ebbs them away to give you a preview of the apocalyptic future. Drink up and save the world!