The idea of using "tracked" roads dates back millennia. In the US and England, the first railroads employed not locomotives but horse-drawn wagons, which were used to haul minerals on the tracks. In 1829, locomotives were imported to the US from England, but they were found to be too heavy for the existing tracks. However, steam powered railroads soon grew to dominate the transportation of cargo. How did horses continue to be used by railroads after the advent of steam locomotives?
Back in the day
The disco craze was relatively short-lived, beginning in the mid-1970s and fading by the 1980s, yet it had a lasting influence on the music scene. A beat-driven style of dance music, disco got its name from the "discotheque," the type of nightclub where it originated. No discotheque was more central to disco than Studio 54, the Manhattan club famous for its mix of celebrities, beautiful people, and hedonism. The club paralleled disco's demise and closed in 1980. What is the space used for today?
Born on a day like today
Representing her native Netherlands, Blankers-Koen made her Olympic debut at the 1936 Berlin Games but failed to medal. Two years later, she set her first world record in track and field. Unfortunately for her, both the 1940 and 1944 Games were cancelled due to WWII, so she had to wait until 1948's Summer Games in London to compete again. In addition to losing precious years, the athlete gave birth twice in the interim. Still, she went on to win four gold medals in London, earning what nickname?