Right and Wrong: How War Changes Children

Iraqi children run to welcome British Troops from 42 Commando as they go on patrol in the Southern Iraqi town of Umm Qasr, 22 miles south of Basra, Thursday March 27, 2003.
(Image credit: AP Photo/Jon Mills/Western Daily Press/Pool)

Childhood is the happiest, most carefree of times. That is, unless your country has been torn apart by war.

The United Nations estimates that children in 50 countries are currently growing up in the midst of war or its ugly aftermath. In the past decades, 2 million children have been killed and 6 million injured in war-torn places. And 23 million children have been forced from their homes.

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Meredith Small is a professor of anthropology at Cornell University, and the author of "Our Babies, Ourselves". She is a contributor to Live Science.