Jul 15, 2010
Microbiologist traces contaminants in soil, water and food
What’s causing health-harming pollution isn’t always readily apparent. Finding a fecal contaminant in a river, for example, doesn’t tell you if you have a problem with your city wastewater treatment system, septic tanks, animal agriculture or wildlife. That’s why soil scientist Dr. Alexandria Graves uses antibiotic resistance and genetic markers to trace the sources of…