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In 2009, Roger Goodell attended the Congressional Hearings on concussions where he declined to say whether there was a connection between playing football and cognitive erosion.

Michele Steele speaks with Mark Fainaru-Wada about the increase in the number of NFL concussions that have been reported in the past three years.

For years NFL officials denied that playing football can cause brain injuries, but the NFL's disability board concluded otherwise. Prim Siripipat talks to Steve Fainaru about the documents he and his brother, Mark Fainaru-Wada, uncovered.

Prim Siripipat talks to Lester Munson about the legal impact of Mark Fainaru-Wada and Steve Fainaru's findings that the NFL disability board concluded playing football could cause brain injuries.

Michele Steele and Mike Fish discuss the rush to judgment among the media, public and medical field about former football players and concussions.

Michele Steele and Mike Fish discuss the differences between the NFL and the CFL in terms of research and safety measures.