Verkkofollowing the p4 values of people, place, planet and performance developed in 2015, the city of pittsburgh has released a series of analyses and strategies to. Together, we are working. Verkkothe global covenant works through an alliance of local, regional, and global city networks to create ambitious, measurable targets that address climate change by. Verkkowhen a mayor or local government official registers their city’s commitment to gcom, they pledge to reduce greenhouse gas emissions, enhance resilience to climate change, and track their progress transparently.