Air testing after Sterigenics was shut down shows `rapid drop` in cancer-causing gas in Willowbrook, EPA official says
(Chicago Tribune Religion News)

After collecting air samples for three months, federal inspectors had planned to wrap up their study of cancer-causing ethylene oxide in west suburban neighborhoods near Sterigenics. But when Gov. J.B. Pritzker´s administration banned the Willowbrook facility from using the highly toxic gas on...