City Lab: There are three things that give him joy in life, says Johnny Stowe: Beer, my grandkids, and fire. Not a campsite fire, or a house fire, but fire that Stowe prescribes and manages across the wild lands of South Carolina. As a heritage-preserve manager for the states department of natural resources, Stowe works with crews to set ablaze predetermined swathes of land around the state, carefully burning off undergrowth with low-intensity flames along carefully planned control lines. Every year, in...