Can 'smart' birdhouses help improve air quality in Amsterdam?

City links: From behaviour-changing Wi-Fi in the trees to Jarvis Cocker as the voice of Sheffield’s trams, we round up the best city stories from this weekThe best city stories from around the world this week take us from the Dutch capital to Mexico City as we think about air pollution, vertiginous living and Jarvis Cocker. Share your thoughts about these city stories – and any others you’ve seen – in the comments below. Continue reading...