Abstract: First paragraph: Agriculture is the human activity that is acting as a major planetary force in the Anthropocene. Although the authors of Breaking Boundaries: The Science of Our Planet dedicated only one chapter to food production (Chapter 11), they contended that four of the nine planetary boundaries within which humanity operates have been overcome by agriculture. The book is organized into three acts or sections. Act I contains four chapters describing keystone events that shaped our planet. It describes a lifeless origin dominated by geophy...
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Topics: 
Astrobiology
Environmental ethics
Earth science