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.

Sarah D. Sparks is a reporter and data journalist for Education Week who covers the teaching profession and pedagogy for Education Week. She has covered education research and the science of learning ...

Rui Hachimura is on pace to shoot at least 40 percent on 3s for the third consecutive season Sam Hodde / Getty Images DALLAS – Rui Hachimura understands the job. As he studied the postgame catering ...

Learn the benefits and risks of options and how to start trading options Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Samantha (Sam) Silberstein, CFP®, CSLP®, ...

Rudeness at work is rampant, and it’s on the rise. Over the past 14 years we’ve polled thousands of workers about how they’re treated on the job, and 98% have ...

Anxiety is both a mental and physical state of negative expectation. Mentally it is characterized by increased arousal and apprehension tortured into distressing worry, and physically by unpleasant ...

But Why is a show led by kids. They ask the questions and we find the answers. It’s a big interesting world out there. On But Why, we tackle topics large and small, about nature, words, even the end ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas including investing, ...

As someone who has reported on the topic of ergonomic office goods for over four years, heed my advice: Invest in a good home-office setup. I spent several months hunched over my laptop at my kitchen ...