Learning about the existence of these HeLa cells was an emotional and difficult experience for the family.

VOA: special.2010.07.21

Their faces show the hard work. Many visitors say it is an emotional experience.

VOA: special.2010.05.31

But Kian is not alone. Researchers say it's not uncommon for journalists who cover traumatic events - like 9/11, Haiti or the Iran elections - to experience high levels of emotional and psychological distress, even long after the immediate danger has ended.

VOA: standard.2010.07.01