Technology has never been more up-close and personal. Internet-connected devices set our home’s temperature, control our lights, and drive our cars. Not just our homes, but our industries, businesses, and cities are striving to be “smart.” The secret to all these smart devices and systems is a combination of digital sensors and Internet connectivity. Together, they form a globally interconnected system of electronics—what has been dubbed the “Internet of Things,” or IoT. The ability for IoT to revolutionize our economy and daily life has been widely theorized, and some optimists have envisioned IoT as the pathway to a technological utopia. However, the environmental effects of the IoT revolution are often overlooked. Twenty-five billion IoT devices are expected to be deployed worldwide by the end of this year, a number expected to grow at a rate of 19% annually. IoT systems are being implemented to manage industries like manufacturing and transportation and thus will be responsible for controlling a vast amount of energy consumption and pollution. Each device also places a burden on the environment with fabrication and eventual disposal. Moreover, IoT devices may change human behavior and energy demand with ambiguous end effects. As IoT gains widespread adoption, both human and technological factors need to be addressed when considering the overall environmental impact of IoT. The complex ways IoT will interact with us and our environment are difficult to measure and predict, leading to ambivalence about how IoT will grow and mature.