But beneath the feet of Iowa’s farmers, a crisis is unfolding. The average topsoil depth in Iowa decreased from around 14-18 inches (35-45cm) at the start of the 20th Century to 6-8 inches (15 ...
Topsoil is used to grow 95 percent of our food, and it is disappearing ten times faster than it is being replaced: America’s corn belt has already lost much of its topsoil, threatening ...
Soon homeowners and gardeners will be getting their hands dirty. Growing flowers, plants, and grass requires a dark and seemingly plentiful ingredient. We wanted to know: What is topsoil and what is ...