Wikipedia:Main Page history/2021 March 19
From today's featured articleUniversity of Washington is a light rail station located on the University of Washington campus in Seattle, Washington, United States. The station is served by Sound Transit's Link light rail system and is the current northern terminus of Line 1. University of Washington station is located adjacent to Husky Stadium and the University of Washington Medical Center. It consists of an underground island platform connected to a surface entrance by elevators and escalators. A pedestrian bridge over Montlake Boulevard connects the station to the University of Washington campus, the Burke–Gilman Trail, and a set of bus stops served by King County Metro and Sound Transit Express routes. Light rail trains serve the station twenty hours a day on most days; the headway between trains is six minutes during peak periods with reduced frequency at other times. The station was built as part of the University Link Extension, which began construction in 2009 and opened on March 19, 2016. (Full article...)
Recently featured:
Did you know ...
|
In the news
On this dayMarch 19: Saint Joseph's Day (Western Christianity)
|
From today's featured list
A codon table can be used to translate a genetic code into a sequence of amino acids. The standard genetic code is traditionally represented as an RNA codon table, because when proteins are made in a cell by ribosomes, it is messenger RNA that directs protein biosynthesis. The mRNA sequence is determined by the sequence of genomic DNA. It can also be represented in a DNA codon table. The DNA codons in such tables occur on the sense DNA strand and are arranged in a 5′-to-3′ direction. Different tables with alternate codons are used depending on the source of the genetic code, such as from a cell nucleus, mitochondrion, plastid, or hydrogenosome. There are 64 different codons in the genetic code and the tables; most specify an amino acid. Three sequences, UAG, UGA, and UAA, known as stop codons, do not code for an amino acid but instead signal the release of the nascent polypeptide from the ribosome. (Full list...)
Today's featured picture
Francis B. Spinola (March 19, 1821 – April 14, 1891) was an American politician and military leader of Portuguese and Irish ancestry. He is considered by some authorities as the first Italian American to be elected to the United States House of Representatives, serving as a representative from New York between 1887 and 1891. Spinola also served as a general in the Union Army during the American Civil War. Engraving credit: Bureau of Engraving and Printing; restored by Andrew Shiva
Recently featured:
|
Other areas of Wikipedia
- Community portal – Bulletin board, projects, resources and activities covering a wide range of Wikipedia areas.
- Help desk – Ask questions about using Wikipedia.
- Local embassy – For Wikipedia-related communication in languages other than English.
- Reference desk – Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
- Site news – Announcements, updates, articles and press releases on Wikipedia and the Wikimedia Foundation.
- Village pump – For discussions about Wikipedia itself, including areas for technical issues and policies.
Wikipedia's sister projects
Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:
-
Commons
Free media repository -
MediaWiki
Wiki software development -
Meta-Wiki
Wikimedia project coordination -
Wikibooks
Free textbooks and manuals -
Wikidata
Free knowledge base -
Wikinews
Free-content news -
Wikiquote
Collection of quotations -
Wikisource
Free-content library -
Wikispecies
Directory of species -
Wikiversity
Free learning tools -
Wikivoyage
Free travel guide -
Wiktionary
Dictionary and thesaurus
Wikipedia languages
This Wikipedia is written in English. Many other Wikipedias are available; some of the largest are listed below.
-
1,000,000+ articles
-
250,000+ articles
-
50,000+ articles