Three things: Red Rocks, Science Blogs and a new Echo Skill

Mike and Greg converse on the subject of the geology and geography of Arizona and the red rocks of Sedona. The rocks tell the story of the ages of the earth, and this is a pretty chapter.  We also talk about the end of ScienceBlogs, which has been a seminal collective that set the tone in many ways for a new means of science communication through social media.  And finally, Greg interviewed Shanthan Kesharaju, who has created an Amazon Echo Skill to tutor in mathematics.  There are implications for the future of how we use adaptive systems to teach skills and develop our minds, with the possibility of staving off dementia in patients as well.

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