Dave Berndtson is a production assistant for PBS NewsHour from Chicago.
Dave’s Recent Stories
Science Jun 22China’s blueprint to clean lakes and stop algae blooms is working
China's success with cleaning lakes offers a blueprint for other industrializing and developing nations, where algal blooms threaten drinking water, kill aquatic life and pose dangers to children, pets and livestock.
Politics Jun 02States step into void left by exit from Paris climate accord
At least 87 mayors have adopted their own version of the Paris accord by Friday afternoon.
Science Jun 01Why more dust storms and Valley fever are blanketing the Southwest
Scientists found the frequency of dust storms more than doubled in recent years, along with an 800 percent uptick in Valley fever, a fungal lung infection.
Science May 18Glass spheres forged by volcanic lightning offer clues about eruptions
Scientists have developed a new way to analyze volcanic eruptions -- with lightning -- that is cost effective, relatively simple and safe.
Nation May 02Officer pleads guilty to federal civil rights charge in 2015 shooting of Walter Scott
A former North Charleston police officer who was caught on video fatally shooting a black motorist as he fled a traffic stop in South Carolina pleaded guilty Tuesday to a federal civil rights charge.
Science Apr 27Can Arctic ecosystems survive without river icings?
A crucial water source for northern ecosystems -- arctic river icings -- are slowly melting away with each successive year.
Science Apr 17As global groundwater disappears, rice, wheat and other international crops may start to vanish
When water is used to grow crops, it’s no longer visible to the consumer. This study keeps track of where ‘hidden’ water is embedded and where it ends up.
Nation Apr 12Worst wildfire season in years prompts a state of emergency in Florida
Florida has entered a state of emergency as firefighters battle more than 100 wildfires that are raging throughout more than 20,000 acres in the state.
Nation Apr 10Dylann Roof pleads guilty in state trial for Charleston church massacre
Roof, 23, was given the death penalty in a federal trial. His guilty plea comes as he begins a second trial for state charges of murder and attempted murder.
Nation Apr 05U.S. women’s soccer scores higher pay, better conditions in new labor agreement
The U.S. women’s national soccer team ratified a new five-year collective bargaining agreement Tuesday following a bitter yearlong dispute over demands for equal pay.