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  1. Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons. Free media repository. MediaWiki. Wiki software development. Meta-Wiki. Wikimedia project coordination. Wikibooks. Free textbooks and manuals.

  2. en.wikipedia.org › wiki › LimestoneLimestone - Wikipedia

    Limestone (calcium carbonate CaCO3) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of CaCO3. Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place ...

  3. en.wikipedia.org › wiki › UluruUluru - Wikipedia

    Uluru ( / ˌuːləˈruː /; Pitjantjatjara: Uluṟu [ˈʊlʊɻʊ] ), also known as Ayers Rock ( / ˈɛərz / AIRS) and officially gazetted as Uluru / Ayers Rock, [1] is a large sandstone monolith. It outcrops near the centre of Australia in the southern part of the Northern Territory, 335 km (208 mi) south-west of Alice Springs .

  4. Avatar: The Last Airbender, also known as Avatar: The Legend of Aang in some regions, is an American animated fantasy action television series created by Michael Dante DiMartino and Bryan Konietzko and produced by Nickelodeon Animation Studio. Avatar is set in a largely Asiatic-inspired world in which some people can telekinetically manipulate one of the four elements—water, earth, fire or ...

  5. Free-air gravity anomaly over the Chicxulub structure (coastline and state boundaries shown as black lines) The Chicxulub crater ( IPA: [t͡ʃikʃuˈluɓ] ⓘ cheek-shoo-LOOB) is an impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is offshore, but the crater is named after the onshore community of Chicxulub Pueblo. [3]

  6. A sample of food-grade diatomaceous earth Scanning electron micrograph of diatomaceous earth Diatomaceous earth (/ ˌ d aɪ. ə t ə ˈ m eɪ ʃ ə s / DY-ə-tə-MAY-shəs), diatomite (/ d aɪ ˈ æ t ə m aɪ t / dy-AT-ə-myte), celite or kieselgur/kieselguhr is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder.

  7. Avatar: The Way of Water is a 2022 American epic science fiction film directed and co-produced by James Cameron, who co-wrote the screenplay with Rick Jaffa and Amanda Silver from a story the trio wrote with Josh Friedman and Shane Salerno.Distributed by 20th Century Studios, it is the sequel to Avatar (2009) and the second installment in the Avatar film series.