Because he's addressing such significant issues within a vast span of time, Diamond can occasionally speak too briefly and assume too much, and at times his shorthand remarks may cause careful readers to raise an eyebrow. But in general, Diamond provides fine and well-reasoned historical examples, making the case that many times, economic and environmental concerns are one and the same. With Collapse, Diamond hopes to jog our collective memory to keep us from falling for false analogies or forgetting prior experiences, and thereby save us from potential devastations to come. While it might seem a stretch to use medieval Greenland and the Maya to convince a skeptic about the seriousness of global warming, it's exactly this type of cross-referencing that makes Collapse so compelling. --Jennifer Buckendorff --This text refers to the Hardcover edition.