Ceimici a rugadh i nGrand Valley, Colorado ab ea Willard Frank Libby ( 1908 - 1980 ). Bhuaigh se Duais Nobel na Ceimice i 1960 as a shaothar in usaid carbon-14 chun datu i seandalaiocht , geolaiocht , geoifisic agus earnalacha eile eolaiochta. [1]