The Search for Powder
 Absolute  powder corrupts. That's how they explain the spike in absenteeism after  a big snowstorm in Colorado, as folks head for the slopes. For Joel  Gratz, though, it becomes just another work-related field trip, to check  first hand on the accuracy of his forecast. His website, OpenSnow   is totally focused on making accurate, pin-point predictions of "powder  days" at Colorado ski areas. And his reputation is becoming legendary,  as he brings Powder to the People (OK, no more puns).   Joel and his ten colleagues at OpenSnow  (not  counting mascot Bruce the Snowman) bring intense scrutiny to weather  data in order to quantify, as only weather- & data-nerds can, their  forecasts. They report their conclusions with freshness, wit,  honesty, sometimes exhilaration, sometimes humility, and have gained a  popular following that numbers in the millions.   Read  below in a question-and-answer interview format how this enterprise has  turned Joel...