Washington Post reporter Michael Grunwald uncovers a decades-long campaign by Monsanto to hide its extremely toxic PCB pollution in Anniston, Alabama. Monsanto held a monopoly on PCB production in the United States until they stopped making them in 1977. For nearly 40 years while producing PCBs at the Anniston plant, Grunwald reports, Monsanto knew that the PCBs they were dumping into an Anniston creek and open-pit landfills were toxic and they concealed that knowledge. According to confidential Monsanto documents made public as part of lawsuit, the company routinely prioritized its own profits and image over public health concerns.