The Hindenburg crash, the San Francisco earthquake, the Galveston hurricane, and the tri-state tornado are just a handful of disasters that slammed America during the first half of the 20th century. After each calamity struck, scientists and engineers raced to analyze the damage and collect data to better protect the public from future catastrophes. Witness these historic disasters in vivid color, and see how they shaped the nation and fostered better understanding of the world's geology.