March 7: Quieter NASCAR races, a dropout's return and tossing out the DUI test

Harvard University in Cambridge, Mass. announced Tuesday, March 7, 2017, that Mark Zuckerberg, who went to Harvard as an undergraduate in 2002 but left after his sophomore year to pursue his company, will be the commencement speaker at the school's May 25, 2017 graduation ceremony.(AP Photo/Steven Senne, File)

Five Things to Know Before You Go to Bed

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