Panel Says Perchlorate Safe at Levels Higher Than EPA Recommendations

Part One: The National Academy of Sciences says perchlorate, a rocket fuel ingredient found in drinking water, is less hazardous than government regulators had earlier warned. But one environmental group says the defense industry pressured the Academy to water down its results. Living on Earth’s Jeff Young reports from Washington.Part Two: Host Steve Curwood talks with the Wall Street Journal’s Peter Waldman about the science behind perchlorate contamination.