1. Robert Gramacy is Lecturer, Statistical Laboratory, University of Cambridge, Cambridge, U.K. . Herbert Lee is Associate Professor, Department of Applied Mathematics and Statistics, University of California, Santa Cruz, CA 95064 . The authors thank William Macready for originating the collaboration with NASA and for his help with the project, Thomas Pulliam and Edward Tejnil for their help with the NASA data, Tamara Broderick for her careful reading and detailed comments, and the editor, associate editor...