Acknowledgments

We deeply appreciate the thorough and useful reviews of and contributions to this book by the following individuals:

• Eileen Poeter, Colorado School of Mines, Colorado, USA;
• Ekkehard Holzbecher, German University of Technology in Oman, Germany;
• John M. (Jack) Sharp, Department of Geological Sciences, The University of Texas, Austin, Texas, USA;
• Harald Klammler, Federal University of Bahia, Brazil;
• Everton de Oliveira, Sustainable Water Institute, Brazil; and,
• Fred Marinelli, Ensero Solutions, Fort Collins, Colorado, USA.

We are grateful to Amanda Sills, Juliana Apolonio, Gabriel Amorim, and Beatriz Andrade of the Groundwater Project for their oversight and copyediting of this book. Special thanks go to André Nogueira and Rita Parente for sharing the vegan version of the ‘free convection cake’ recipe found in the back of this book.