- The Paleoarchean (/ˌpeɪlioʊ.ɑːrˈkiːən, ˌpæl-/ PAY-lee-oh-ar-KEE-ən, PAL-), also spelled Palaeoarchaean (formerly known as the early Archean), is a geologic era within the Archean Eon. The name derives from Greek “Palaios” ancient. It spans the period of time 3,600 to 3,200 million years ago. The era is defined chronometrically and is not referenced to a specific level of a rock section on Earth. The earliest confirmed evidence of life comes from this era, and Vaalbara, one of Earth’s earliest supercontinents, may have formed during this era.
- U.S. Bank Centre (Wikipedia)
US Bank Centre is a 177 m (581 ft), 44-story skyscraper in Seattle, in the U.S. state of Washington. It opened as Pacific First Center and was constructed from 1987 to 1989. It is currently the eighth-tallest building in Seattle and was designed by Callison Architecture, who is also headquartered in the building. It contains 943,575 sq ft (87,661 m2) of office space.