James Balog’s extraordinary photographs are a window on the world’s endangered wildlife, melting glaciers and disappearing landscapes. In 2006 he founded the Extreme Ice Survey and serves as its executive director. The nonprofit has deployed 39 cameras on 17 glaciers in Alaska, Greenland, Iceland and the Rocky Mountains that take pictures hourly during daylight hours. What’s emerged from the approximately 4,500 photos from every camera each year is a moving picture of climate change.