In 1980, an iridium spike in Italian clay changed the dinosaur extinction debate
Published on: May 27, 2026, 6:20 p.m. | Source: Times of India
Science News: In 1980, physicist Walter Alvarez and his son found an iridium spike in a clay layer in Gubbio, Italy, providing crucial evidence that linked an extraterrestrial impact to the extinction of dinosaurs, altering the understanding of Earth's geological history and catastrophic events.
