Tag: quality
How Bad Air Quality Slows Down Marathon Runners
How Bad Air Quality Slows Down Marathon Runners Even modest amounts of air pollution may affect athletic performance, a new study finds By Claire Maldarelli edited by Tanya Lewis Participants run during the 2014 Beijing International Marathon in heavy smog. Even moderately poor air quality can affect finish times, a new study shows. Ask any…
D.C. crash investigators focus on altitude and vision quality of helicopter crew
Emma Bowman Three days after the midair collision of an Army helicopter and an American Airlines passenger plane near Ronald Reagan Washington National Airport, air safety investigators said on Saturday that they are still working to fill in some key details that could point to the cause of the crash. They are looking into whether…