Video: World News

Accused Boston Marathon bomber pleads 'not guilty' to attack (1:02) 

July 10 - Wearing an orange prison jumpsuit, accused Boston Marathon bomber Dzhokhar Tsarnaev pleads ''not guilty'' to committing the worst mass-casualty attack on U.S. soil since 9/11, a crime that could bring him the death penalty. Katharine Jackson reports. ( Transcript )

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