At the 24th meeting of the Parties to the UN Climate Change Convention, governments completed the so-called Paris Rulebook, the set of guidelines for implementing the Paris Climate Change Agreement, and attention is shifting to implementation of measures that cut greenhouse gas emissions. Mark Radka, Chief of the Energy and Climate Branch at UN Environment, describes how the UN works with countries, companies, and people to reduce the emission of greenhouse gases. Series: "Bren School of Environmental Science & Management" [Public Affairs] [Science] [Show ID: 34900]