Fortune magazine’s Richard Martin explains why the American coal industry isn’t going down without a fight. Then, Donald Margulies talks about the Roundabout’s revival of his play, “Dinner with Friends,” with Darren Pettie and Jeremy Shamos who star in the production. Helen Oyeyemi discusses her latest novel, Boy, Snow, Bird. Set in 1953, it tells the story of a woman named Boy who moves to a small town in Massachusetts in search of beauty—and finds something much more complicated. Plus, our latest Please Explain is all about why sitting—on our couches, on the subway, at our desks, in our cars—can be so bad for us over the long term.