WORCESTER – The monkey wrench, candlepin bowling, smiley face and steam calliope are on the list of items created in Worcester over the course of the city’s more than 300-year history. Several local inventions ultimately changed not only the way the world works but how humanity “works it.” However, it was long after many of the industrial mills and factories closed their doors that something often described as “one of the most important inventions of the 20th century” would come from the area: the birth control pill. The Worcester Foundation for Experimental Biology, at Clark University, was founded in 1944...