Why the global soil shortage threatens food, medicine and the climate
Soil can be considered black gold, and we're running out it.The United Nations declared soil finite and predicted catastrophic loss within 60 years."There are places that have already lost all of their topsoil," Jo Handelsman, author of "A World Without Soil," and a professor at the University of Wisconsin-Madison, told CNBC.The impact of soil degradation could total $23 trillion in losses of food, ecosystem services and income worldwide by 2050, according to the United Nations Convention to Combat Desertification."We…