William Hintz likes to think of the complex connections making up our environment as a series of dominoes. “You push one domino and many other dominos fall — even though you didn't push them,” Hintz, ...

Even at thresholds of sodium chloride that were considered safe at 230 milligrams of chloride per liter of water in the U.S. to 120 milligrams of chloride per liter in Canada, researchers found a ...