An often-forgotten group victims in the September 11th narrative are the many rescue workers who fell sick after being exposed to contaminants at Ground Zero. According to a new article by ProPublica, recently uncovered documents reveal that federal officials in Washington and New York went further than was previously known to downplay concerns about health risks, and misrepresented or concealed information that might have protected thousands of people from the contaminated air at Ground Zero. Meanwhile, a new study has provided potentially groundbreaking evidence of a link between exposure to toxic debris at Ground Zero and the development of cancer. The medical journal, The Lancet, reports male firefighters exposed to dust and smoke at Ground Zero have a 19 higher percent risk of developing cancer than colleagues who were not exposed. The finding comes just one month after the National Institute for Occupational Safety and Health ruled there’s insufficient evidence to draw a link between the smoldering ruins of the World Trade Center after 9/11 and cancer. Firefighters and rescue workers have been unable to receive payments for cancer treatments because cancer is not covered under legislation providing care for 9/11 responders. We speak with Anthony DePalma, author of "City of Dust: Illness, Arrogance, and 9/11." His latest article for ProPublica is called "New Docs Detail How Feds Downplayed Ground Zero Health Risks." We’re also joined by Joel Kupferman, executive director of the New York Environmental Law and Justice Project. He was co-counsel for a group of residents and workers suing the EPA and ex-EPA Head Christine Todd Whitman.