Hope you had a great weekend. And thank you for starting a new week with CNN STUDENT NEWS. I'm Carl Azuz.First up, Australia, the country and continent just wrapped up hosting the G-20 summit. G-20 is short for group of 20.It's membership includes the biggest advanced and emerging economies in the world.Its delegates represent two thirds of the world's population, and 85 percent of its gross domestic product. That factors in in an agreement made at this year's G-20.The thousands of delegates attending pledged to try to improve the global economy. How? By spending money. Governments investing in new projects for their countries.The leaders hope to create millions of jobs by doing it, but an agreement is not the same as action.So, it remains to be seen if everyone follows through.From the South Pacific, we are moving to Mexico. This is a country that has struggled with corruption in its government judges and police.In the city of Iguala the mayor has been charged as the probable mastermind in the disappearance of 43 students.They joined the political protest and were captured by police on September 26.No sign of them since. Authorities say police turned them over to a gang that later killed them. Some don't believe it.In Guerrero, they are known for some of the most explosive demonstrations.The fire department has just arrived, but guess what? Not only are the cars burning, but the inside of the building is also burning.