“The digital age is profoundly narrowing our horizons and our creativity, not to mention our bodies and physiological capabilities,” said adventure photographer James Balog, even as his hard-won chronicles of a changing planet are delivered to millions digitally. Yet Balog, who roamed the hills until dark as a kid in rural New Jersey, can hardly get his eighth-grade daughter off her phone. “These are hours not being spent outside,” he said. “It kills me.”