The document summarizes the agenda for the Global Forum 2012 Session #3 on big data, social media, systemic models, and governance. The session includes presentations from leaders in government, non-profits, and technology on topics related to how large amounts of digital data can be used to address challenges in various sectors such as transportation, renewable energy, livestock, and governance. Presenters will provide examples of how their organizations are leveraging big data through techniques including streaming analysis, data warehousing, and open data to improve decision-making and outcomes. The session aims to discuss both current applications of big data as well as future directions and transformations enabled by new technologies and patterns of data usage.