The document summarizes key elements of the Paris Agreement and Rulebook on climate change:
1. It outlines the history of international climate governance through agreements like the UNFCCC, Kyoto Protocol, and Paris Agreement.
2. It then summarizes key elements of the Paris Agreement including commitments to limit global temperature rise, "bottom up" national climate commitments, and processes for increasing ambition over time.
3. It provides an overview of the 2018 meeting in Katowice where countries agreed to implementation rules and guidance for several aspects of the Paris Agreement, while leaving some issues like carbon market rules unfinished.