noelle hanrahan of prison radio coproduce this down. come back, we will top super bowl sunday, talk about brain injuries, and the dangers football players and others face with someone who knows, a former football player himself, who now runs a major brain injury institute at harvard university. stay with us. ♪ [music break] >> this is "democracy now!," democracynow.org, the war and peace report. i'm amy goodman. as the san francisco 49ers and baltimore ravens prepare for sunday's super bowl, the safety of the game is facing increasing scrutiny as more evidence emerges about links between concussions and brain damage. president obama recently said -- "if i had a son, i have to think long and hard before i let him play football." research shows repeated blows to the head can lead to chronic headaches, deteriorating memory, early dementia and even premature death. former football all pro rodney harrison revealed this week he is "scared to death." >> i would give up, hit someone, the entire state of misspending. i would walk to the sideline