- Elizabeth Lynne Cheney (/ˈtʃeɪni/; born July 28, 1966) is an American attorney and politician. She represented Wyoming’s at-large congressional district in the U.S. House of Representatives from 2017 to 2023, and served as chair of the House Republican Conference—the third-highest position in the House Republican leadership—from 2019 to 2021. Cheney is known for her vocal opposition to former president Donald Trump. As of March 2023, she is a professor of practice at the University of Virginia Center for Politics.
- Eoarchean (Wikipedia)
The Eoarchean (IPA: /ˌiːoʊ.ɑːrˈkiːən/ EE-oh-ar-KEE-ən; also spelled Eoarchaean) is the first era of the Archean Eon of the geologic record. It spans 431 million years, from the end of the Hadean Eon 4031 Mya to the start of the Paleoarchean Era 3600 Mya. The beginnings of life on Earth have been dated to this era and evidence of archaea and cyanobacteria date to 3500 Mya, comparatively shortly after the Eoarchean. At that time, the atmosphere was without oxygen and the pressure values ranged from 10 to 100 bar (around 10 to 100 times the atmospheric pressure today).