IT’S SNOWING AT last. It’s been snowing all day. Big fat fairytale flakes like whirligigs from the winter sky. Snow changes everything, so says Zozie, and already the magic’s beginning to work: changing shops, houses, parking-meters into soft white sentinels as the snow falls, grey against the luminous sky, and little by little, Paris disappears; every flake of soot, every discarded
