Offended by lyrics they deemed too sexual and violent, Tipper Gore and Susan Baker campaigned to put warning labels on albums in 1985. Years later, warning labels have ended up in some unexpected places.

Every so often, Congress holds a hearing on the perils of pop culture. The "peril" has evolved from comic books, to rock and hip hop music, to violence in video games, but the proceedings follow a script.

In the 1960s, mind-altering drugs like LSD helped fuel the counter-culture. Today, psychedelics are turning on a new generation – of scientists.

How do some companies regain public trust after something goes seriously wrong, while others fail? A look at how Tylenol responded after someone spiked its pills with poison in the 1980s sheds some light.