To help reach its goal of being carbon-positive in all operations by 2030, consumer product giant Unilever has transformed its old US headquarters into an ultra-sustainable office park fitted with the latest technology.  Throughout the building, 15,000 sensors measure temperature, light, carbon dioxide, humidity, and who’s present in a room, helping the building adjust over time to become more efficient. If the temperature is too warm or the lights are too bright in a certain room, employees can adjust the room’s settings via an app. Unilever also made an interesting arrangement with the developers of their new HQ; If the building’s energy savings don’t live up to the promises, the developer will cover the bills.