In fact, by the 1950s, there was enough prosperity and white collar work that many began to move to the suburbs.

事实上，到了20世纪50年代，由于郊区已经有了足够多的繁荣景象和白领工作，许多人开始搬到郊区居住。

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I looked and I said,hey, that's skateboarding on snow. That's perfect for me." And he's still at it 27 years later in a career that has included not only injuries like a broken collar bone, broken ankles and torn knee ligaments, but also a liver transplant.

VOA: standard.2010.02.26

Property taxes in suburbs have escalated, with taxes in collar Lake county higher than Los Angeles!

FORBES: Innovation REALLY Matters - Lessons Learned from Detroit

Cofounder and co-CEO of the Carlyle Group, David Rubenstein, grew up in blue collar circumstances in Baltimore.

FORBES: A Conversation With David Rubenstein

But the cull of older workers, which started in blue-collar industries in the 1970s, spread into white-collar occupations over the next two decades.

BBC: Analysis