Climate Central: Every summer, a man dressed in a Darth Vader suit goes for a sprint through Death Valleys blistering temperatures. But by the end of the century, he may not have to travel much farther than outside his front door to recreate his daring stunt in temperatures hot enough to fry an egg. A new interactive research report from Climate Central says that dramatic warming will affect more than 1,000 cities before the end of the century. By the end of this century, summers in most of the 1,001 cities...