What do you do if your alley is strewn with garbage after the sanitation truck comes through? Or if you're tired of the rowdy teenagers next door keeping you up all night? Is there a vacant lot on your block accumulating weeds, needles, and litter? For a century, Chicagoans have joined block clubs to address problems like these that make daily life in the city a nuisance. When neighbors work together in block clubs, playgrounds get built, local crime...