[dramatic finale] ♪ ♪ [cheers and applause] since our report first aired gustavo dudamel became the musicn in september 2009 dudamel continues to work as the artistic director of the simon bolivar orchestra. el sistema continues to thrive as well, both at home and around the world. as of april 2012, more than 25 countries, including the united states, have launched music programs modeled on el sistema. [ticking] coming up: the deadly impact of ivory poaching. do you see any correlation between the decision to auction off the ivory and the number of orphans? >> we do. every time ivory is auctioned legally, there's a rise in poaching. kenya's elephant orphanage, when 60 minutes on cnbc returns. [ticking] [ticking] >> can you imagine an orphanage that's a happy place? we couldn't, but then we found one. it's an orphanage for elephants located just outside nairobi in kenya. the elephants have been orphaned because their parents--their mothers, mainly--have been killed by poachers for their ivory. as we reported in april 2009, a young elephant can only survive a day or two without milk. so the