Imagine if our environment helped us to be more productive, to learn the most from our social interactions, and to inspire us when we felt stuck. The Responsive Environments Group at the MIT Media Lab develops systems that connect ubiquitous sensors and computers through the IoT, allowing us to analyze and control networked devices and make them work in concert. The resulting interface can be considered an effective extension of the human nervous system, leveraging approaches including wearable electronics, sensor networks, and the discovery of latent dimensions in user preference for the design of intuitive lighting interfaces.