For the past two days, crowds have swarmed to Grant Park for Lollapalooza, a four-day music festival. Decked in gems and head-to-toe glitter, attendees have waited and pushed through crowds in the scorching...

1975 was the year of Margaret Thatcher's debut as leader of the Conservative Party, the end of the Vietnam War and an inflationary peak — a period of rapid change.  That same year is the namesake...