Global Climate Action Summit
The Global Climate Action Summit was held September 12–14, 2018 at the Moscone Convention Center in San Francisco, California. Hosted by California Governor and co-founder of the Under2 Coalition and America's Pledge, Jerry Brown, the summit aimed to address climate change by bringing together non-state actors and elected leaders at the state and local level.
Source: Wikipedia — Global Climate Action Summit (CC BY-SA 4.0)