“Why do we have so much stuff?” That’s the question author Colwell’s sister posed to her archaeologist brother, spurring him to investigate why and how humanity went “from needing nothing to needing everything.” It clearly resonates with modern Western culture – decluttering articles abound; Marie Kondo encourages us to rid ourselves of anything that doesn’t spark joy; we watch episodes of “Hoarders” with morbid fascination and not a little fear that it could happen to us. In fact, Colwell makes the argument that as we keep buying the latest shiny gadgets, we are all hoarders, simply keeping most of our stuff in landfills instead of our homes. Over a relatively short but superbly researched 250 pages, Colwell examines humanity’s full history and concludes three big leaps got us to where we are today – we developed tools to feed ourselves and protect us from the environment; second, we began to ascribe meaning to objects and the world around us, creating art, religion, and the concept of ownership; and third, the Industrial Revolution allowed the creation of abundance, followed by the marketing of desire: “… production was only half the equation. The other half was consumption. Supply needed demand” (p. 182). This last section was the most interesting to me, especially Colwell’s personal discussion of his family’s attempt to “buy slow” – severely limiting their purchases. It ain’t easy. But we are going to have to do something. We are drowning in our stuff, and it’s killing our planet. To conclude, Colwell makes a pitch for a fourth “big leap” – to reduce our consumption and change our relationship to stuff, to be mindful of our purchases, and redefine what wealth means to us, and to shift to a circular economy where materials must be recycled and reused, not stored in giant landfills. Colwell includes a lot of interesting endmatter – after the acknowledgements, there’s an interesting glossary of terms (wish I’d known it was there while I was reading the book), endnotes, a very lengthy reference list of more than 30 pages, and an index. My thanks to the Grand Forks (B.C) & District Public Library for including this title in its adult nonfiction collection.