Nobel laureate and Columbia economist Joseph Stiglitz continues to believe that the U.S. needs another stimulus package, or else it will risk having high unemployment “through the middle of the decade” and a weak economy for the next several years. While much of the first stimulus funding has yet to be spent, he tells Yahoo! TechTicker that he sees a real risk of a double-dip recession without a second package that focuses on helping with state revenue shortfalls and job creation.