thanks for joining us. >> i'm tyler mathieson, thanks for joining us, eb. we'll see you tomorrow. >>> tonight on the computer history museum presents revolutionaries. >> so if we can basically have a world where every child is educated, every person, every citizen has economic opportunity, they end uptaking charge of their own destiny. >>> john wood and matt flannery have succeeded both in computing and social change. is it possible to do well and to do good? we explore this question. >> major funding for revolutionaries is provided by the intel corporation. >> thank you for being he

thanks for joining us. >> i'm tyler mathieson, thanks for joining us, eb. we'll see you tomorrow. >>> the following kqed production was produced in high definition. >>> this time on "spark" -- first, the women of "kitka" preserve and celebrate the rich vocal traditions of eastern europe. >>> next, the mixed-media work of santa cruz artist victoria may is inspired by the intricate process of custom dressmaking. >>> then, a look at how local artists are surviving the recession, and what we might be able learn from the historic wpa programs of the '30s. next on "spark." >>> major support for "spark" is provided by --

captioned by media access group at wgbh access.wgbh.orgio this is "nightly business report" with tyler mathiesonples, 13 years of quarterly revenue growth has ended putting pressure on the world's most valuable company to create the next must-have device. >>> don't lose out on lucrative social security strategy. it's about to go away if you don't act fast. >>> heartache and disappointment after for the fda to fast track a drug for a devastating illness. all that and more tonight on "nightly business report" for tuesday, april 26th. >> good evening, everyone, and welcome. well, it had to happen some day and today was the day. apple's 13-year growth surge has