The developed world is increasingly obsessed with two things: electronic gadgets and our changing climate. We stand in open-mouthed awe at our technological achievements while dejectedly shrugging our shoulders at the state of the planet on which we live. Our choice is clear: we need to reimagine the way in which we engage with the technology we create. Peter Denton's first RMB manifesto, "Gift Ecology: Reimagining a Sustainable World," focused on interpersonal relationships as the foundation for a vibrant and ecologically sustainable society. In his second thought-provoking book in the series, the author challenges readers to use our cherished technologies in new ways. We need to think of our devices not merely as better rocks and sharper spears, but as profound extensions of our hearts and minds that we can use to change the world. Technology is in our heads, not in our hands. If we don't like what our technologies are doing to the world and to ourselves, then we all have both the power and the responsibility to make better choices today than we did yesterday. "Technology and Sustainability" redefines our relationship with technology and offers ways in which we can use these tools to make the world a better place through enlightened and positive engagements. If systems of technology have multiplied individual choices into global problems, then it means those same systems can multiply better choices into the global solutions we need for a sustainable future.