In many big cities the metro lines and particularly some of the stations can provide cool shelters during hot days. Reducing the speed of traffic reduces the airflow and heat of acceleration and braking. More home office work if employees have adequate cooling at home reduces emissions additionally. The historic Kreuzberg-Metro-Station, nowadays called “Platz der Luftbrücke” is big enough to accommodate many people who are in need of shelter for whatever purpose. Underground you do not even hear much from the busy traffic above. More efforts to brighten up the station could create an urban space which invites to rest in hot days rather than rush around the city. Climate change will ask us to come up with many innovative and unorthodox solutions as part of public health initiatives.
