New data released by the organization detailed how 4 in 5 residents of cities with reliable measurements face levels of particulate air pollution that exceed what the WHO recommends

According to the latest CDC analysis, there were 120 multi-state outbreaks involving foodborne illnesses between 2010 and 2014 - an average of one about every two weeks.

After years of review and endless controversy, the Food and Drug Administration on Thursday approved the nation's first genetically altered animal -- a salmon.