The IAG presented its sixth Early Career Researcher Award at the Goldschmidt Conference in Prague (August 2011). Now a well-established annual event, this award is based on the abstracts submitted for presentation at either poster or oral sessions; this year the IAG’s jury had a record 1150 contributions to consider. We report with great plea- sure that the winner of the 2011 award isDr. Leah Morgan from the Vrije Universiteit Amsterdam for her abstract entitled “Improving the Accuracy of the 40Ar/39Ar Geochronometer.” Leah’s work was judged a significant advancement in improving data quality in the K/Ar radioac- tive decay system. Her work focuses on using metrologically rigorous methods for refining the decay parameters within the branched K/Ar and K/Ca decay chain. The panel of IAG judges and the IAG Governing Council recognize her work to be of key relevance to our Society’s core goal of improved geochemical metrology.