Did the Great Chicago Fire really start after a cow kicked over a lantern in a barn? Find out the truth in this addition to the What Was? series.

On Sunday, October 8, 1871, a fire started on the south side of Chicago. A long drought made the neighborhood go up in flames. And practically everything that could go wrong did. Firemen first went to the wrong location. Fierce winds helped the blaze jump the Chicago River twice. The Chicago Waterworks burned down, making it impossible to fight the fire. Finally after two days, Mother Nature took over, with rain smothering the flames. This overview of a stupendous disaster not only covers the fire but explores the whole history of fire fighting.

On October 29, 1929, life in the United States took a turn for the worst. The stock market – the system that controls money in America – plunged to a record low. But this event was only the beginning of many bad years to come. By the early 1930s, one out of three people was not working. People lost their jobs, their houses, or both and ended up in shantytowns called “Hoovervilles” named for the president at the time of the crash. By 1933, many banks had gone under. Though the U.S. has seen other times of struggle, the Great Depression remains one of the hardest and most widespread tragedies in American history. Now it is represented clearly in our What Was…? series.

At 800-feet long, the Hindenburg was the largest airship ever built–just slightly smaller than the Titanic! Also of a disastrous end, the zeppelin burst into flame as spectators watched it attempt to land in Lakehurst, New Jersey on May 6, 1937. In under a minute, the Hindenburg was gone, people jumping from windows to escape. However, only 62 of the 97 crew members and passengers onboard survived. The exact cause of the disaster is still unknown and remains a fascinating historical mystery perfect for this series.

Isaac Newton was always a loner, preferring to spend his time contemplating the mysteries of the universe. When the plague broke out in London in 1665 he was forced to return home from college. It was during this period of so much death, that Newton gave life to some of the most important theories in modern science, including gravity and the laws of motion.