Carbon—humans are emitting way too much of it. The problem is simple, but solutions are tricky. How do we measure and reduce our carbon emissions? And how do we know if a person or company that pledges to reduce its emissions is actually doing so? On Life in the Greenhouse, we use greenhouse gas accounting as a tool to whittle headlines and break down major trends into understandable facts about climate change—where we are, where we’re headed, and what we might do about it. Our show is a production of the Carbon Accounting, Reporting, and Management Lab (CARML) at Northern Arizona University.