Sigourney Weaver, 73, talks teen character in 'Avatar 2': Older actors are 'extraordinary'

Sigourney Weaver, 73, talks teen character in 'Avatar 2': Older actors are 'extraordinary'

Sigourney Weaver returns in a new, younger role in the "Avatar" sequel. She hopes playing 14-year-old Kiri will send a message about Hollywood ageism.