Dr. Ray Weil is professor of Soil Science at the University of Maryland and author of “The Nature and Properties of Soils,” the most widely used textbook in the field. We are currently covering his travels to Ethiopia as he uses his interactive teaching style to educate on soil systems and promote sustainable agricultural practices. #umd #agnr #NGO #development #sustainableagriculturaldevelopment #worldfood #science #soilhealth #soilfertility #education #Ethiopia #sustainableliving #enviromentalscience #ecosystem