Just a few miles off Route 22 in Allen Township, quarter horses gallop through a pasture and farmers tend to soil that will soon sprout corn. By summer, fields of wildflowers will bloom, giving motorists off the beaten path a pleasing dose of nature. That scene will soon be harder to find as a township blanketed with farmland and green open space becomes the Lehigh Valley's epicenter for warehouse development. Plans are in the works for 6.5 million square feet of the kind of massive distribution centers that line Interstate 78 and Route 100 — imagine warehouses stretching across more...