Ben Leffel (Public Policy and Leadership) has published a new piece in npj Climate Action (with coauthors Don Grant and Evan Johnson) on what matters for decarbonizing power plants: They show that for the world's power plants, what matters for carbon emissions reductions (2009-2018) is not national-level climate policy, but city-level climate action, particularly in developing countries. Specifically, they find that national climate policies do not impact carbon reductions in the world's power plants, but rather, city-level climate action appears to have the biggest impact, particularly cities that are active members of global city climate organizations such as ICLEI, C40 Cities and the Global Covenant of Mayors for Climate & Energy. This study reinforces that national governments at the UN need local governments now more than ever, must support their efforts and must integrate them into national decision making — not only because of the ongoing efforts of the "Local Governance & Municipal Authorities Constituency" to give cities a voice at the UN, but also the very first Local Climate Action Summit being held this year.