Of it all. Of the broad expanse of the world and all its inhabitants, its layers, its depths and heights, the atmospheric mantle in which it wraps itself, its floating mountains of ice and its solid soaring peaks of rock and snow, its savage predators, and all its shades of human endeavor. Every August we marvel at the many applications of global positioning science, at real-world instances of hardware and software in the service of humankind and of Gaia itself.