- Proterozoic (Wikipedia)
The Proterozoic (IPA: /ˌproʊtərəˈzoʊɪk, ˌprɒt-, -əroʊ-, -trə-, -troʊ-/ PROH-tər-ə-ZOH-ik, PROT-, -ər-oh-, -trə-, -troh-) is the third of the four geologic eons of Earth’s history, spanning the time interval from 2500 to 538.8 Mya, the longest eon of the Earth’s geologic time scale. It is preceded by the Archean and followed by the Phanerozoic, and is the most recent part of the Precambrian “supereon”.
- Norman D. Vaughan (Wikipedia)
Colonel Norman Dane Vaughan (December 18, 1905 – December 23, 2005) was an American dogsled driver and explorer whose first claim to fame was participating in Admiral Byrd’s first expedition to the South Pole. He also ran dog teams in a professional capacity as part of a search and rescue unit in World War II, in sporting events like the Olympics and the Iditarod Trail Sled Dog Race, and in three Presidential Inauguration ceremonies.