Virginia Tech engineering Professor Marc Edwards watched as water flowed from a garden hose in Enterprise, Louisiana. As he moved a jar to catch a sample, the color changed from clear to brown.
원문출처 : https://www.cnn.com/2018/11/28/health/enterprise-louisiana-water/index.html
원문출처 : https://www.cnn.com/2018/11/28/health/enterprise-louisiana-water/index.html