captions copyright 1986 educational film center annenberg media ♪ annenberg media ♪ many elderly americanso old to work. pensions were non-existent, savings gone. what was franklin delano roosevelt's answer to the needs of older americans? too many young people were untrained, uneducated, and unemployable. how could they get a place at the economic starting line? welfare reform. after 60 years of guaranteeing benefits to welfare recipients, the federal government wants them to go to work. has the new policy succeeded? we are the richest, most prosperous nation on earth.

copyright 1986 educational film center annenberg media ♪ for information about this and other annenberg media programs call 1-800-learner and visit us at www.learner.org. annenbergedia ♪ annenberg media ♪ it was 1927. once again, havoc reigned throughout the mississippi and tennessee valleys. during a great depression, congress created the tva-- a federal project to control the ravages of the great tennessee river. why would anyone object? medical advances have added years to americans' lives. but not everyone can afford medical care's high cost.

financial support of: for information about this and other annenberg media programs call 1-800-learner and visit us at w.learner.org. annenberg mediand: with additional funding from these foundations and individuals: and by: and the annual financial support of:

annenberg media ♪ and: annenberg media with additional funding from these foundations and individualsand by: and the annual financial support of:

the caption center wgbh educational foundation annenberg media ♪ with additional funding provided by: for information about this and other annenberg media1-800-437-2423 para información gratis de la organización de investigaciones de la degeneración macular.

annenberg media ♪ and: with additional funding from these foundations and individuals: and by: and the annual financial support of: for information about this and other annenberg media programs call 1-800-learner and visit us at www.learner.org. ox?tÑÑogÑgÑgoÑoÑ annenbergnd: with additional funding from these foundations and individuals: and by: and the annual financial support of: ♪ ("american cinema" theme playing) ♪

annenberg media ♪ additional funding provided by: for informationtion on the collabout thission course and other annenberg mediarograms call 1-800-learner and visit us at www.learner.org. >> many things in the universe behave in a synchronized way -- whether man-made or natural -- working together in harmony, moving simultaneously, pulsing with a regular rhythm, coordinated in time and space. "moving in sync," we would say. we see synchronization as an emergence of spontaneous order in systems that most naturally should be disorganized. and when it emerges, there's a beauty and a mystery to it, qualities that often can be understood through the power of mathematics. how does a symphony orchestra play in sync and harmony? the answer is obvious: the group consists of humans who have the capacity to read music, listen to each other, and follow their leader. but what about a group with no leader or sheet music? like a jazz jam session? itstill perform in sync, each performer working off the cues of the others, synchronized via spoken or unspoken communication. what about schools of fish or flocks of birds? how do t