The GIUK gap is a naval warfare bottleneck in the northern Atlantic Ocean between Greenland (G), Iceland (I), and the United Kingdom (UK). Such geographic "chokepoints" are of strategic importance, as they form relatively narrow passages that are more easily patrolled and secured. During the Cold War, the West kept a close eye on Soviet submarine activity through the gap, while the Soviets monitored it for any forces headed their way. What monitoring system did the US develop for this purpose?
Back in the day
The first of the Seven Sisters—traditionally female colleges often considered the equivalent to the historically male-dominated Ivy League—Mount Holyoke is one of the oldest women's colleges in the US. It was founded by Mary Lyon, a pioneer in women's education, in the midst of a movement that created unprecedented new educational opportunities for women in the US. Many colleges were later modeled on Mount Holyoke. What unusual feature did each dorm room at the seminary originally have?
Born on a day like today
Day was an American journalist, Christian anarchist, and social reformer. She originally wrote for the New York socialist journals The Call and The Masses. After the birth of her daughter in 1927, she converted to Catholicism, cofounded The Catholic Worker, and started a movement to aid the urban poor. Although her outspoken pacifist views were criticized by Catholic conservatives, she influenced Catholic liberals. What honor did she receive 20 years after her death?