From the reviews: "Kargel does an excellent job of tying together the work of many scientists and whose results provide evidence for the hypothesis that Mars may have periodically had a warmer, wetter climate than previously recognized. Kargel, as astrogeologist with the U.S. Geological Survey in Flagstaff, Arizona, integrates and explains such diverse work as geomorphological observations, theoretical calculations, and measurements of mineralogy and chemistry from orbiting spacecraft. The book is full of excellent examples of the most recent imaging data from NASA missions to Mars, as well as many photos of terrestrial analogues, which surely will aid the nonspecialist in understanding how planetary geologists go about understanding the landforms of Mars... "Specialists and enthusiasts will find that the inclusion of detailed information drawn from a wide range of subdisciplines makes for a well-rounded story... "Kargel's entertaining book presents one evolving path of scientific thought regarding Mars that is gaining wider acceptance. It will instigate useful, stimulating debate on the role of water in shaping the Mars we see today and point how we might enhance our understanding of the Red Planet in the future." Science (11 March 2005) "... [Mars: A Warmer, Wetter Planet is] a welcome read for someone looking for more contemporary details about the red planet than just captions to pretty pictures. Kargel marshals an impressive array of information to argue that Mars was once a warm and wet planet, with rivers and seas covering its surface. ... Recent discoveries from the Mars Exploration Rovers and Mars Express only serve to bolster Kargel's conclusion." (Sky & Telescope, May 2005) Jeffrey Kargel...in his book, Mars: A Warmer, Wetter Planet...draws away the veil of mystery surrounding Mars to show us the red planet's intriguing visage. Not only does he provide a detailed analysis of shapes and features, but he also provides a description of how these likely came into being. (Mark Mortimer, in Universe Today) Choice Outstanding Title! (January 2006) "In this book, Jeffrey Kargel, a leading planetary scientist, weaves a refreshingly different allegory of the past, present and future of the red planet, and the personalities that shaped our contemporary ideas ... . This is an excellent text and is clearly written for a broad readership. After reading this book you'll feel like an expert without ever having to endure a single equation. Now what could be better fun than that?" (Neil English, Astronomy Now, November, 2005) "The text is engaging and accessible ... . It will make a welcome read for someone looking for more contemporary details about the red planet ... . Kargel marshals an impressive array of information to argue that Mars was once a warm and wet planet, with rivers and seas covering its surface." (R.N., Sky & Telescope, May, 2005) "Jeff Kargel does an admirable job of tying together the work of many scientists ... . explains such diverse work as geomorphologic observations, theoretical calculations, and measurements of mineralogy and chemistry obtained from orbiting spacecraft. The book is full of excellent examples of the most recent imaging data from NASA missions to Mars ... .specialists and enthusiasts will find that the inclusion of detailed information drawn from a wide range of subdisciplines makes for a well-rounded story. ... Kargel's entertaining book presents one evolving path ... ." (Victoria E. Hamilton, SCIENCE, Vol. 307, March, 2005) "Humanity's understanding of Mars has changed dramatically during the past 40 years. ... In this book, Jeffrey Kargel ... presents a detailed case for this dramatic new view. ... The book provides a thorough discussion of the subject in the title, and is illustrated with lots of photos ... . I recommend this book to those well-versed in Mars studies." (Nadine Barlow, Astronomy, March, 2005) "Kargel, a planetary scientist at the U.S. Geological Survey, walks the reader through the exciting ideas that helped shape our modern understanding of Mars. In 11 fully comprehensive chapters ... Kargel musters his scientific inclinations to give the reader an absolutely thorough overview of the concepts ... . If you want the very best and most-up-to-date rendition of the continually unfolding saga of Mars exploration, then look no further than this book. It's an absolute gem and a joy to read." (Neil English, Astronomy & Space, March, 2006)

• Foreword by Apollo 17 Astronaut Jack Schmitt - former US Senator and the last human to have walked on the lunar surface.- Imagining.- Watershed.- Warm, Wet, Early Mars.- Oceanus Borealis.- Outbursts, Outwash, and Outrage.- Life Etched in Stone.- We Will be Martians.- Stepping Stone to the Stars.

From the reviews: "Kargel does an excellent job of tying together the work of many scientists and whose results provide evidence for the hypothesis that Mars may have periodically had a warmer, wetter climate than previously recognized. Kargel, as astrogeologist with the U.S. Geological Survey in Flagstaff, Arizona, integrates and explains such diverse work as geomorphological observations, theoretical calculations, and measurements of mineralogy and chemistry from orbiting spacecraft. The book is full of excellent examples of the most recent imaging data from NASA missions to Mars, as well as many photos of terrestrial analogues, which surely will aid the nonspecialist in understanding how planetary geologists go about understanding the landforms of Mars... "Specialists and enthusiasts will find that the inclusion of detailed information drawn from a wide range of subdisciplines makes for a well-rounded story... "Kargel's entertaining book presents one evolving path of scientific thought regarding Mars that is gaining wider acceptance. It will instigate useful, stimulating debate on the role of water in shaping the Mars we see today and point how we might enhance our understanding of the Red Planet in the future." Science (11 March 2005) "... [Mars: A Warmer, Wetter Planet is] a welcome read for someone looking for more contemporary details about the red planet than just captions to pretty pictures. Kargel marshals an impressive array of information to argue that Mars was once a warm and wet planet, with rivers and seas covering its surface. ... Recent discoveries from the Mars Exploration Rovers and Mars Express only serve to bolster Kargel's conclusion." (Sky & Telescope, May 2005) Jeffrey Kargel...in his book, Mars: A Warmer, Wetter Planet...draws away the veil of mystery surrounding Mars to show us the red planet's intriguing visage. Not only does he provide a detailed analysis of shapes and features, but he also provides a description of how these likely came into being. (Mark Mortimer, in Universe Today) Choice Outstanding Title! (January 2006) "In this book, Jeffrey Kargel, a leading planetary scientist, weaves a refreshingly different allegory of the past, present and future of the red planet, and the personalities that shaped our contemporary ideas ... . This is an excellent text and is clearly written for a broad readership. After reading this book you'll feel like an expert without ever having to endure a single equation. Now what could be better fun than that?" (Neil English, Astronomy Now, November, 2005) "The text is engaging and accessible ... . It will make a welcome read for someone looking for more contemporary details about the red planet ... . Kargel marshals an impressive array of information to argue that Mars was once a warm and wet planet, with rivers and seas covering its surface." (R.N., Sky & Telescope, May, 2005) "Jeff Kargel does an admirable job of tying together the work of many scientists ... . explains such diverse work as geomorphologic observations, theoretical calculations, and measurements of mineralogy and chemistry obtained from orbiting spacecraft. The book is full of excellent examples of the most recent imaging data from NASA missions to Mars ... .specialists and enthusiasts will find that the inclusion of detailed information drawn from a wide range of subdisciplines makes for a well-rounded story. ... Kargel's entertaining book presents one evolving path ... ." (Victoria E. Hamilton, SCIENCE, Vol. 307, March, 2005) "Humanity's understanding of Mars has changed dramatically during the past 40 years. ... In this book, Jeffrey Kargel ... presents a detailed case for this dramatic new view. ... The book provides a thorough discussion of the subject in the title, and is illustrated with lots of photos ... . I recommend this book to those well-versed in Mars studies." (Nadine Barlow, Astronomy, March, 2005) "Kargel, a planetary scientist at the U.S. Geological Survey, walks the reader through the exciting ideas that helped shape our modern understanding of Mars. In 11 fully comprehensive chapters ... Kargel musters his scientific inclinations to give the reader an absolutely thorough overview of the concepts ... . If you want the very best and most-up-to-date rendition of the continually unfolding saga of Mars exploration, then look no further than this book. It's an absolute gem and a joy to read." (Neil English, Astronomy & Space, March, 2006)

• Foreword by Apollo 17 Astronaut Jack Schmitt - former US Senator and the last human to have walked on the lunar surface.- Imagining.- Watershed.- Warm, Wet, Early Mars.- Oceanus Borealis.- Outbursts, Outwash, and Outrage.- Life Etched in Stone.- We Will be Martians.- Stepping Stone to the Stars.