May 1, 2010 10:54 pm What Happened to the Start-Ups If the 1990’s were the boom years for Silicon Valley startups, you could probably call the new model Modern Maturity. US & World Videos 1:20 Former educator's company helps teach via music, performance 3:51 Ford marks 60th anniversary of the Mustang 1:06 Watch: Experts say get kids involved early when talking finances 2:23 Tesla laying off more than 10% of workforce 1:09 Most people say their income tax refund is spent already