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.

Think about radio, and what often comes to mind is the crystal clear music and spoken words broadcast by FM stations across America. But radio wasn't always so advanced -- or so popular. Like many ...

Mitosis has been studied since the early 1880s, to the extent that we now have a detailed, but still incomplete, description of spindle dynamics and mechanics, a sense of potential mechanochemical and ...

Clay Halton was a Business Editor at Investopedia and has been working in the finance publishing field for more than five years. He also writes and edits personal finance content, with a focus on ...

TIOBE Index for February 2026: Top 10 Most Popular Programming Languages Your email has been sent February’s TIOBE Index shows a leaderboard that looks steady at first glance, but small shifts beneath ...

In 1 Corinthians 15, Paul emphasizes that we will be given new bodies. In his book The Great Divorce, a fictional look at Christian perceptions of life after death, C.S. Lewis imagines what those new ...