One Sibling's Act Leads to Change stars 9-year-old Trent Briggs and his 12-year-old sister Megan. When he discovered that Scholastic Dictionary had used the word "retarded" in its definition of Down syndrome, Trent took action. He wrote to Scholastic and asked them to change the definition using the term "intellectual disability" instead. Trent and Megan show the rest of us how one person can inspire another to create positive change.