U.S. cities have been built on the most fertile soil in the country, lessening the contributions of these lands to the food web and human agriculture, according to a NASA study.

One of the last massive ranches in West Texas, the Turkey Track Ranch is home to 80,000 acres of fertile grassland and a historic battle site. Courtesy of Icon Global Group Nearly 80,000 acres of ...

One third of the cropland in the upper Midwest has entirely lost its fertile topsoil, according to a new study. Other scientists doubt that figure, but agree that soil loss is a big problem.