In San Francisco, Watch Where You Step

We try to keep the conversation decorous here at ENV but the story from San Francisco is relevant to our concerns -- namely the intersection of science and culture -- and sadly, it could not be any more elemental. Ahead of Super Bowl 50 and the Christmas shopping season, SF's Mayor Ed Lee says he's dead set on clearing homeless "campers" from the streets of the city. It's not just the inconvenience of tents sprawled in the center of sidewalks of that stylish and affluent city -- it's the san...