Injecting electrical currents into soil (IMAGE) University of Toledo Caption Dr. Solomon Ehosioke, a postdoctoral research associate and geophysicist at The University of Toledo, right, adjusts a resistivity meter hooked up to a long cable to inject an electrical current into the soil. Also pictured: UToledo master’s students Obinna Urom, left, and Efemena Emmanuel, middle. Credit Daniel Miller, The University of Toledo Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.