Wikipedia:Today's featured article

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Today's featured article

This star symbolizes the featured content on Wikipedia.

The Main Page includes a section where an adapted lead section from one of Wikipedia's featured articles is displayed as "Today's featured article" (TFA). The current month's queue can be found here. TFAs are scheduled by Bencherlite, the TFA coordinator. Community discussion of suggestions takes place at the TFA requests page.

If you notice an error in a future TFA blurb, you can usually fix it yourself, but if the mistake is in today or tomorrow's blurb, you will need to leave a message at WP:ERRORS to ask an administrator to fix it. The blurbs are formatted as a single paragraph as close as possible to 1,200 characters (including spaces) in length, with no reference tags, alternate names, or extraneous bolding. Only the link to the specified featured article is bolded, and this must be the first link in the blurb. For biographical articles, birth/death dates are trimmed down to year only. The blurb should be preceded by an appropriate lead image when available; fair use images are not allowed.

The editnotice template for Today's Featured Article is {{TFA-editnotice}}. It is automatically applied by {{Editnotices/Namespace/Main}} when the article's title matches the contents of {{TFA title}}.


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Today's featured article

Liquid fluorine

Fluorine is an extremely reactive chemical element with atomic number 9 (pictured in liquid form at cryogenic temperatures). A highly toxic pale yellow gas at standard conditions, it was first described in 1529 as its principal source fluorite, a mineral added as a flux for smelting, and named after the Latin verb fluo meaning "flow". As the lightest halogen and most electronegative element, it is difficult to separate from its compounds, and several early experimenters died or were injured. The process employed for its modern production—low-temperature electrolysis—remains the same as that used by Henri Moissan in 1886 to achieve its first isolation. The high costs of refining fluorine gas lead most commercial uses, such as aluminium refining, insulation and refrigeration, to use its compounds; uranium enrichment is the free element's largest application. Fluorine is a part of some pharmaceuticals and appears as the fluoride ion in toothpaste, but has no known metabolic role in mammals; a few plants possess fluorine-containing poisons to deter herbivores. Fluorocarbon gases are usually potent greenhouse gases and organofluorine compounds persist in the environment. (Full article...)

Recently featured: System Shock – Gustav Holst – Great North of Scotland Railway

Tomorrow's featured article

Skull of Transandinomys bolivaris

Transandinomys bolivaris, also known as the long-whiskered rice rat, is a rodent in the genus Transandinomys. It is found in humid forest from northeastern Honduras to western Ecuador, up to 1800 m (5900 ft) above sea level. Since it was first described in 1901 from Ecuador, six scientific names have been introduced for it, but their common identity was not documented until 1998 and the species had a number of names until it was moved to the new genus Transandinomys in 2006. It is a medium-sized rice rat and has very long vibrissae (whiskers)—those above the eyes are up to 50 mm (2.0 in) long, making it distinguishable from other similarly sized rice rats. The fur, which is soft and dense, is usually dark brown above and light gray below; it is darker in juveniles. The feet are long and the tail is about as long as the head and body. The skull (pictured from above) is narrow and relatively long, and has a broad interorbital region (between the eyes). The species generally lives on the ground, but some young animals have been taken in vegetation, up to 1.5 m (5 ft) above the ground. Although it is rare, its conservation status is thought to be secure. (Full article...)

Part of the Transandinomys series, one of Wikipedia's featured topics.

Recently featured: Fluorine – System Shock – Gustav Holst