The Oil Prospectors Who Found the Dinosaur Killer

While hunting for oil for Mexico's state company Pemex in 1978, geophysicists Glen Penfield and Antonio Camargo found a buried ring 180 km wide under the Yucatán coast and suspected an impact crater. Colleagues laughed, Pemex called it volcanic, their 1981 talk drew about twenty people, and it took a journalist's tip and forgotten drill samples in a New Orleans closet to confirm the crater that ended the age of dinosaurs. Read the story first, or test yourself straight away.