Yesterday—Sunday—the streets of Paris were free of the typical brutal traffic. “The car-free day comes as the city wrestles with an air pollution problem that has led the city to experiment with a number of policies to clean up the air, including turning policies to make the city more friendly for pedestrians and cyclists.”

As Dick and I were walking to Notre Dame Cathedral, it dawned on us that something peculiar was going on. The usual cacophony of car honking, motorcycle revving and brake screeching was replaced by Parisians roaming the streets on foot, bicycles, skateboards, and scooters. It was splendid to see families, especially children, out and about the streets of Paris. Crystal blue skies and a perfect temperature just added to the surrealism.