politics, negotiations, haggling at rome has seen it all before and 2000 years ago it happened here at the ancient forum. this weekend, italy s modern capital is hosting the leaders of the g20, the world s largest economies whose presidency rotates every year. together they make up 80% of the world s gdp or gross domestic product. total number of goods and services produced was up of goods and services produced was up 75% of global trade and 60% of the world s population. italy has called the themes people, planet and prosperity. on the first is the coronavirus pandemic and to increase vaccinations, particularly among poorer countries. the second is the environment, comingjust poorer countries. the second is the environment, coming just before the un s climate change conference or cop26 in glasgow. together the g20 countries produce about 80% of the wild boars greenhouse gas emissions put up on the third, that is about