This Day in History
- Jul 31, 1498: Columbus arrived at the island of Trinidad.
- Jul 31, 1790: The first U.S. patent was issued to Samuel Hopkins of Vermont for a process of making fertilizer.
- Jul 31, 1954: Mount Godwin-Austen (K2), the world's second-highest peak, was climbed for the first time, by an Italian team led by Ardito Desio.
- More events from This Day in History: Jul 31