Ruthanne "Dusty" Cowan, 86, of Concord, passed away March 5, 2017. Director of Membership, Boston Museum of Science. Harvard Class of 1964, equestrienne, world traveler. She leaves sons Philip of Cambridge, Spencer and his wife Joy of Chapel Hill, NC, Gary of Concord, Grant of Newton, granddaughters Emily and her husband Paul of Los Angeles and Hannah of San Francisco and grandson Noah of Portland, OR. Also survived by nieces and nephew Beth, and Susan and Ed Hanley. Private family celebration will take place.