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.

1 Department of Medicine, Biology and the Environment, ANU Medical School, Australian National University, Canberra, Australian Capital Territory, Australia 2 Department of Surgery, Trauma and ...

For more than two decades, FPS games have been the driving force of the PC games industry. From the classic physics chaos of Half-Life 2 to the intense action of Stalker 2, these are the best FPS ...

Enzymes help with specific functions that are vital to the operation and overall health of the human body. They help speed up chemical reactions and are essential for respiration, digestion, muscle ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at Multex (Reuters) ...

Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced financial consultant. She has a demonstrated history of working in both institutional and retail environments, from broker-dealers to ...