(Portland, OR)  --  Multnomah County will launch a new sex-education program, with the help of a six-and-a-half-million-dollar grant.  The Adolescents and Communities Together project is intended to reduce the number of teen pregnancies and curb sexually-transmitted diseases across the Portland metro area.  The goal is to develop sex education for middle- and high-school students to help them finish school, develop positive relationships, and stay healthy.  They'll be advised by a youth advisory committee composed of teens.