We study the relationship between water nutrient pollution and U.S. agriculture using data between the early 1970s and late 2010s. We estimate a positive causal effect of corn acreage on nitrogen concentration in the country's water bodies using alternative empirical approaches. We find that a...

The book will help you understand the patterns of great value propositions, get closer to customers, and avoid wasting time with ideas that won't work. You'll learn the simple but comprehensive process of designing and testing value propositions, taking the guesswork out of creating products and...