Michigan officials still say they cannot conclusively link an outbreak of Legionnaire's disease to Flint’s contaminated water supply, partly because sputum cultures were not collected from patients. But the possibility of a link was raised in internal government emails as early as October 2014, and state officials did not inform the public of the outbreak until last month.

"After a runaway oil train killed 47 people in Lac-Megantic, Quebec, just miles from the Maine border in 2013, Mainers demanded to know more about the state’s railways."

"The U.S. House of Representatives on Wednesday easily passed a bill requiring federal environmental regulators to act faster when lead contamination is found in drinking water."

"More than two years after federal researchers found high levels of lead in homes where water mains had been replaced or new meters installed, city officials still do little to caution Chicagoans about potential health risks posed by work that Mayor Rahm Emanuel is speeding up across the city."

"More than eight months before Gov. Rick Snyder disclosed a deadly Legionnaires' disease outbreak in the Flint area, federal health officials worried a lack of cooperation in Michigan could be hampering the public health response."