Journalist and author Fareed Zakaria hosts this in-depth look at the major global developments of the week (the title's ``GPS'' stands for ``Global Public Square''), with an emphasis on new ideas and innovative solutions to the world's toughest problems. Each episode also features Zakaria leading a panel discussion and interviewing a major world figure.This week:Human activity and global climate change; the stock market and global chaos; German election preview; President Trump and China; crisis in Myanmar. Guests are Fraser Nelson, Anne Applebaum, Martin Wolf, Neil deGrasse Tyson, and Katharine Hayhoe.