"The Catholic Climate Covenant inspires and equips people and institutions to care for creation and care for the poor. Through our 19 national partners, we guide the U.S. Church's response to climate change by educating, giving public witness, and offering resources."
Here is the general website:
Here is a link to a webinar on engaging church leaders in climate action, including a recording, slide deck, and handouts:
https://catholicclimatecovenant.org/resource/season-creation-training-how-engage-our-church- leaders-climate-action
Although this material was created for Catholic institutions and congregations, it contains valuable information for other denominations and faiths.