One of the main symbols of US military presence in Afghanistan was the Bagram Air Base. Now, after 20 years, the last remaining American troops have left. And, the town slogan for Lytton, British Columbia, is “Canada’s hot spot." This week’s heat wave caused temperatures there to soar to 121 degrees Fahrenheit on Tuesday. Also, "The Last Kings of Shanghai," Jonathan Kaufman’s latest book, takes readers to 20th-century Shanghai, and explores the complicated legacies of two families.