The city’s park and boulevard system was built to connect people, reduce heat and protect against floods. Can it live up to that?By Yiannis MastorasI’m biking down Logan Boulevard on a bright Chicago morning. Tall maples filter the sun into dancing patches of shade. Joggers pass, dogs tug at leashes and parents steer strollers along broad sidewalks buffered from traffic by wide medians. The air feels calm and clean, almost like a park pretending to be a street.