On Monday, Canadian Prime Minister Justin Trudeau and US President Joe Biden held their first joint meeting. And climate change was one of the top topics on the agenda. On the same day, President Biden talked about America’s climate diplomacy after the country officially rejoined the Paris Climate Agreement. But talk is cheap, and POLITICO’s Zack Colman reports that convincing the world is going to take a lot of complicated executive and legislative action. Zack Colman is an energy reporter for POLITICO. Anthony Adragna is an energy reporter for POLITICO and host of POLITICO Energy. Carlos Prieto is a Politico podcast producer. Jenny Ament is the senior producer of POLITICO audio. Irene Noguchi is the executive producer of POLITICO audio.