Against the backdrop of blue skies, crashing waves, and steep, rocky cliffs, and clad in his iconic rust-colored jacket, Carl Sagan uttered perhaps his most famous quote. In the first episode of his acclaimed television series, Cosmos, he said, "We are made of star stuff." He was alluding to the awe-inspiring scientific theory called "supernova nuc...

My favorite thing about John Senior, one of the most successful and influential teachers in the last century, is that his success and influence was not in talking about teaching or writing about teaching.  If the growing talk about his legacy seems to grow, his post-mortem fame is coming from the fact of his teaching.  He’s no John Dewey, famou...