New clues point to a possible cause of Hawaii’s wildfires as rescue and recovery efforts continue. Plus, Al Roker tracks Hurricane Hilary as it swirls in the pacific and heads toward Southern California and the west coast of Mexico. Also, TODAY’s back to school: NBC’s Vicky Nguyen breaks down tax-free ways to save on back-to-school shopping. And, Jenna Bush Hager shares the story of Ruth Simmons – the first black President of an Ivy League university.