Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Pork barrel politics is the practice of an ...

Today's Top Tune is a free weekday download of standout songs, including advance releases, exclusive live tracks, remixes, and new artists, at KCRW.com. KCRW's all-music channel Eclectic24, blending ...