When the local water management agency closes your favorite beach due to unhealthy water quality, how reliable are the tests they base their decisions on? As it turns out, those tests, as well as the standards behind them, have not been updated in decades. Now scientists from Lawrence Berkeley National Laboratory have developed a highly accurate, DNA-based method to detect and distinguish sources of microbial contamination in water.
Ever wonder what’s in the black cloud that emits from some semi trucks that you pass on the freeway? Lawrence Berkeley National Laboratory (Berkeley Lab) scientist Thomas Kirchstetter knows very precisely what’s in there, having conducted detailed measurements of thousands of heavy-duty trucks over months at a time at two San Francisco Bay Area locations.
A study led by Berkeley Lab’s Ronald Cohen has shown that nitrogen oxide emission controls are improving the notorious air quality in California’s San Joaquin Valley.