City links: Blueprints for a neighbourhood of tree houses and smiley-face signals to reduce road rage feature in this week’s best city stories
This week’s best city stories from around the web imagine urban neighbourhoods of tree-like houses, explain the existence of ghost cities, look at infrastructure for wildlife and ask whether sending smiley face signals to fellow drivers could cure road rage. We’d love to hear your responses to these stories, and any others you’ve read recently, both on Guardian Cities and elsewhere. Just share your thoughts in the comments below.