A coroner's office is reporting that the wife of a Nobel Prize-winning professor died of exposure and hypothermia.
Exponent news partner WLFI-TV reports that the Ogle County Coroner's office reports the death of Sumire Negishi as accidental.
The 80-year old woman was initially found by police in a vehicle on March 13 in an Illinois landfill. Police also found professor Ei-ichi Negishi nearby.