The Girl Who Doesn't Age

Researchers wonder if 16-year-old toddler might hold genetic key to why we age.

Brooke's Story

Brooke's Story
Girl Who Doesn't Grow
Girl Who Doesn't Grow
Girl Who Doesn't Grow
Girl Who Doesn't Grow
Girl Who Doesn't Grow
Brooke's Story
Brooke's Story
Girl Who Doesn't Grow
Girl Who Doesn't Grow
Girl Who Doesn't Grow
Three sisters: Caitlin, 4; Emily, 8; and Brooke, 1. "She looks like a 6-month-old, but she kind of has a personality of a 16-year-old," Caitlin said of Brooke. "Sometimes we joke about how she rebels." (Courtesy Greenberg Family)
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