(USDA/NRCS Florida) — In the south Florida sweltering heat, soil scientists Craig Prink and Martin Figueroa suit up in long-sleeved shirts, long pants, hats, and tightly wrap bandanas around their faces to protect against the sun, water glare, and insects. Heavy gloves and neoprene footwear keep the serrated-edged sawgrass from slicing their skin when they wade through the water. They …