The beavers are back: animals return to Stockholm after almost a century

City links: An ambitious urban photography project in Toronto, beavers make a comeback in the Swedish capital, and the Parisians who are suing City Hall over dirty streets, all feature in a roundup of this week's best city stories

This week's best city stories takes us from barbershops in Philadelphia where a programme is bridging the gap between black men and the polling booths, to the grimy streets of Paris, where residents are fed up of being treated like the underdogs and are suing the state. Share your thoughts about these city stories - and any others you've seen - in the comments below.