Friends of Five Creeks’ restoration projects took giant steps forward this summer thanks to many teen volunteers. They ranged from individuals to international exchange students — like the 50 high-school student from Mexico who cleared the mountain of invasives shown in the photo. The students, many from areas plagued by drugs and violence, stayed at UC Berkeley as part of a program aimed at developing leaders from non-elite groups. The Jovenes in Accion (Youth in Action) program is run by AYUSA Global Youth Exchange. Other volunteers came from the Civic Leadership Institute, a Northwestern University-based program for outstanding high-school students nationwide, and from local teen programs including Camp Kee Tov.