Overview: SQL remains a core skill for data management across industries in 2026Free courses build fundamentals while paid ...

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.

Following the onset of the recent global economic crisis, much of the news, especially in advanced economies, was dire. Unemployment was rising, company profits were falling, financial markets were ...

January 20, 2026 • In early January, President Donald Trump signed an executive order threatening bans on defense contractors paying dividends or buying their stock back.