I recently discovered a very engaging website called “Brain Pickings.” Maria Popova, who produces the site, describes it as

Your LEGO treasure chest, full of pieces across art, design, science, technology, philosophy, history, politics, psychology, sociology, ecology, anthropology, you-name-itology. Pieces that enrich your mental pool of resources and empower you to combine them into original concepts that are stronger, smarter, richer, deeper and more impactful. http://www.brainpickings.org/index.php/about/

From what I’ve explored so far, Brain Pickings is a fun mix of thought provoking content.  For example, the last couple of posts included discussion as varied as presidential campaign art from the past 200 years and the classification of the astronomical body Pluto.  Add it to your e-reader to get something interesting everyday!