Main Page

Welcome to Wikipedia

6,580,747 articles in English

From today's featured article

E. electricus
E. electricus

The electric eels are a genus, Electrophorus, of tropical freshwater fish from South America in the family Gymnotidae. They are electric fish, and can stun their prey by delivering shocks at up to 860 volts. Their electrical capabilities were first studied in 1775, contributing to the invention in 1800 of the electric battery. Despite their name, they are not closely related to the true eels (order Anguilliformes) but are electroreceptive knifefish (order Gymnotiformes), more closely related to catfish. Previously, the genus was believed to be monotypic, containing only Electrophorus electricus. In 2019 it was discovered that there were three species. They are nocturnal, air-breathing animals, with poor vision complemented by electrolocation; they mainly eat fish. Males are larger than females. Electric eels grow for as long as they live, adding more vertebrae to their spinal column. Some captive specimens have lived for more than 20 years. (Full article...)

Did you know ...

Giant bucket hat in Cardiff
Giant bucket hat in Cardiff

In the news

Vigil at Southwest Jiaotong University
Vigil in Chengdu for Ürümqi fire victims

On this day

November 28: Bukovina Day in Romania (1918)

Stalin, Roosevelt and Churchill in Tehran
Stalin, Roosevelt and Churchill in Tehran
More anniversaries:

From today's featured list

The Japan National Stadium during the 2020 Summer Olympics
The Japan National Stadium during the 2020 Summer Olympics

Ninety-three nations received medals at the 2020 Summer Olympics, and 65 of them won at least one gold medal, both records. The 2020 Summer Olympics was an international multi-sport event held in Tokyo, Japan, from 23 July to 8 August 2021. The games were postponed by one year as part of the impact of the COVID-19 pandemic on sports. Athletes from the United States won the most medals overall, with 113, and the most gold medals, with 39. Host nation Japan won 27 gold medals surpassing its gold medal tally of 16 at both the 1964 and 2004 summer ions. American swimmer Caeleb Dressel won the most gold medals at the games with five. Meanwhile, Australian swimmer Emma McKeon won the greatest number of medals overall, with seven in total. As a result, she tied Soviet gymnast Maria Gorokhovskaya's seven medals at the 1952 summer ion for most medals won at a single games by a female athlete. Bermuda, Qatar, and the Philippines won their nation's first Olympic gold medals. (Full list...)

Today's featured picture

Siege of Khartoum currency

Siege of Khartoum currency was an emergency issue of paper money created by the British major-general Charles George Gordon, the governor-general of Anglo-Egyptian Sudan, during the siege of Khartoum by Mahdist forces between 1884 and 1885. Denominated in piastres (and 50 Egyptian pounds), the first banknotes were dated 25 April 1884 and they were issued as late as November 1884. This set of ten banknotes, some of which were hand-signed by Gordon, is part of the National Numismatic Collection at the Smithsonian Institution.

Banknote design cr: Charles George Gordon and the Khedivate of Egypt; scanned by Andrew Shiva

Other areas of Wikipedia

  • Community portal – The central hub for ors, with resources, links, tasks, and announcements.
  • Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues.
  • Site news – Sources of news about Wikipedia and the broader Wikimedia movement.
  • Teahouse – Ask basic questions about using or ing Wikipedia.
  • Help desk – Ask questions about using or ing Wikipedia.
  • Reference desk – Ask research questions about encyclopedic topics.
  • Content portals – A unique way to navigate the encyclopedia.

Wikipedia's sister projects

Wikipedia is written by volunteer ors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects:

Wikipedia languages