from Wikipedia, just now:
"And still, we’re the only nation that’s ever used nuclear atomic weapons on human beings. We did it twice. Hiroshima, Nagasaki. We did it.”
On March 26, 2007, in a conversation about the Bush administration's rationale for the invasion of Iraq, O'Donnell stated that 7 World Trade Center had been imploded, in line with 9/11 conspiracy theories. When asked by Hasselbeck who she thought was responsible, she commented that she had no idea, but according to the Miami Herald she suggested in her blog that it was done to destroy evidence of the corporate financial scandals at Enron and WorldCom. The building housed the offices of government agencies like the Central Intelligence Agency, the Federal Bureau of Investigation, and the United States Securities and Exchange Commission.
Popular Mechanics posted a response on its website "for those interested in what physics and demolition experts have said regarding WTC 7’s collapse, as detailed in our book "Debunking 9/11 Myths." The potential explanation included that 7 World Trade Center housed New York City's emergency command bunker, so there were large fuel tanks throughout the building that fed generators by pressurized lines. The National Institute of Standards and Technology (NIST) is still investigating the collapse, however, NIST's studies have thus far found "no evidence of a blast or controlled demolition event".