Guardian Cities cycle week: what it is and how you can get involved

Cycling is at a tipping point: while some cities build bike lanes and ban cars, others are experiencing a backlash. Will the future of cities be two-wheeled? Join us all this week and speak your mindIn the battle against air pollution and gridlock caused by cars, cities around the world are increasingly turning to a low-tech, two-wheeled solution.Urban cycling, however, appears to be at a tipping point. While London and even Los Angeles look to build better bike lanes, and Oslo or Madrid make ef