Leaders from the world's 20 leading economies are meeting in Rome on Saturday for their first in-person G20 summit since the COVID-19 pandemic. The meeting hopes to find a way forward on climate change and vaccine equality. "From the pandemic to climate change, to fair and equitable taxation, going it alone is simply not an option," G20 host and Italian Prime Minister Mario Draghi told the assembled group of leaders ahead of the closed-door meeting.