A Newsday investigation revealed that Grumman Aerospace knew toxic chemicals were leaking into the ground in Bethpage. Newsday Associate Editor Paul LaRocco and Deputy Editor David Schwartz explain.  Credit: Newsday Studios

'It's depressing, it's frustrating' A Newsday investigation revealed that Grumman Aerospace knew toxic chemicals were leaking into the ground in Bethpage. Newsday Associate Editor Paul LaRocco and Deputy Editor David Schwartz explain.