In the feature article "Estimating Carbon Budgets for U.S. Ecosystems" in the 21 February issue (Eos 87(8), 2006), M. Field was mistakenly listed as an author.Also, the complete reference for Potter et al. <2005> is: Potter, C., P.Tan, V. Kumar, C. Kucharik, S. Klooster, V. Genovese, W. Cohen, and S. Healey (2005), Recent history of largescale ecosystem disturbances in North America derived from the AVHRR satellite record, Ecosystems, doi:10.1007/s10021-005-0041-6.