What's the Story with Mindfulness Based Stress Reduction (MBSR) and the idea of Secular Mindfulness

The training called Mindfulness-Based Stress Reduction was developed by Jon Kabat-Zinn in the late '70s and could be credited with the concept of "secular mindfulness." It is taught worldwide by hundreds of teachers and has been the topic of well over 1000 scientific research papers. Is it Buddhist? Is it effective? Jon Aaron is one of the prominent teachers of this curriculum and a trainer of new teachers. He and Doug talk about the Buddhist underpinnings of th...