HighTower's Global Investment Solutions airs the Collective Wisdom podcast each week as part of "MoneyLife with Chuck Jaffe." This week, HighTower's Matt Harris and Patrick Fruzzetti of HighTower Advisors discuss how rising interest rates have cash starting to generate modest returns, but agree that investors must look at broadening and solidifying their income streams at a time when the rate picture could shake up the fixed-income world.