The general rule of thumb is the farther north the better, although you probably want to be south of melting permafrost. Europe is in for a rough ride, as it wi

The general rule of thumb is the farther north the better, although you probably want to be south of melting permafrost. Europe is in for a rough ride, as it will be faced with hundreds of millions if not billions of refugees from Africa, the Middle East, and southern Asia in the not-that-distant future. So, Alaska, northern Canada, or New Zealand if you can afford to buy citizenship.