John Prine’s Paradise
Today is National Metric Day https://nationaldaycalendar.com/national-metric-day-october-10/
Born on this day in 1946, in Maywood, Illinois, American country folk singer-songwriter John Prine, (Hello in There, Angel From Montgomery), https://en.wikipedia.org/wiki/John_Prine
Today's words are fullerene and allotropes.