The leaders of the Group of Seven (G-7) economies are about hold a three-day summit in the U.K. with climate change, the economy, the coronavirus pandemic and geopolitics all set to be major talking points.

CNBC has a quick guide to everything you need to know about the summit:

What’s going on?

From June 11-13 (Friday to Sunday) the leaders of seven of the world’s most advanced economies will meet in Cornwall, in the southwest of England.

The leaders will discuss shared challenges, from the pandemic and vaccines to climate change and “ensuring that people everywhere can benefit from open trade, technological change and scientific discovery,” according to the U.K. government.

It’s the first in-person G-7 summit in almost two years. Britain wants “leaders to seize the opportunity to build back better from coronavirus, uniting to make the future fairer, greener and more prosperous.”

The big names at the summit are undoubtedly the leaders of the G-7 which is made up of the U.K., Canada, France, Germany, Italy, Japan, and the U.S. The EU, which sends the presidents of the European Commission and the European Council, also attends.

The summit is seen as one of the few forums where the world’s most influential societies and advanced economies are brought together for close-knit discussions.

This year, Australia, India and South Korea have been invited to attend as guest countries and “to deepen the expertise and experience around the table,” the U.K. government noted.

The leaders attending the summit represent over 60% of the people living in democracies around the world, representing over 2.2 billion people and over half of the world’s economy.