The key to solving loneliness and pollution might be giving up cars and hanging out in the street. It's working in Barcelona.

The key to solving loneliness and pollution might be giving up cars and hanging out in the street. It's working in Barcelona.

Several people walk along Consell de Cent street — part of a "superblock" — on September 8, 2023, in Barcelona, Catalonia, Spain.David Oller/Getty Images <ul><li>Barcelona is a decade into transform… [+7230 chars]

Read More