“To a large extent, the future will be determined by how two global crises—ecological deterioration and extreme poverty—are addressed,” according to the introspective book published by the Tellus Institute, a nonprofit environmental group, to mark its 25-year anniversary. Halfway to the Future’s beautiful photographs illustrate the book’s progressive message that bold action is required to address climate change, freshwater scarcity, and wasteful industrial processes. To request a copy of the book or download its text from the Web, go to www.tellus.org. —KELLYN S. BETTS