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|[[Image:Writeathon.png|left|54px]]<center><BIG>'''The global [[CZ:Monthly Write-a-Thon|Write-a-Thon]] is on!</BIG><br />''Join us today, Wednesday, May 7th!'''''</center><br />
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[[Image:Writeathon.png|left]] On Wednesday, June 4th we're inviting all Citizens to come to the wiki, start a new article, and edit somebody else's new article.  It's a '''[[CZ:Monthly Write-a-Thon|Write-a-Thon]]'''!  It's a wiki-whoopie, a cyber-social, a collaborative kegger!  '''Are you new?'''  That's a good day to get a [[CZ:Quick Start|Quick Start]]!
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=== '''Help Write Articles about our World''' ===
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Welcome to '''Citizendium''', a wiki for providing free knowledge where authors use their '''real names'''. We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject.  Our online community prides itself on being congenial and supportive.
{{Getting Started}}


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=== The Geogra-Thon has begun!  Join us! ===
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=== A new wiki encyclopedia project&mdash;and more! ===
<blockquote>
* We aim at reliability and quality, not just quantity.
 
* We welcome [[CZ:Group Editing|collaboration]] with everyone who has knowledge, broad or narrow, about any of the world's innumerable subjects.
 
* We write under our real names—and are both collegial and congenial.
 
* We now have [[:Category:CZ Live|{{Articles_number}}+ articles]] and are gathering speed.
 
* [[CZ:Eduzendium|Eduzendium]] participants write for academic credit.
 
 
 
 
 
 
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=== Write for the ''Citizendium''—knowledge is fun!===
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&nbsp;
[[Image:Water drop crop.jpg|center|thumb|300px|{{#ifexist:Template:Water drop crop.jpg/credit|{{Water drop crop.jpg/credit}}<br/>|}}Each sentence you add is another drop in an expanding sea of words.]]


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=== Some of our finest <font size=1>[ [[CZ:Approval Process|about]] ] </font> ===
[[Image:Approved.png|35px|35px|left]]
:* [[:Category:Approved Articles|Approved Articles]]
:* [[:Category:Developed Articles|Developed Articles]] <font size=1>(over 800)</font>
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|<div style="background-color:lightyellow; color:darkblue; font-size:90%"><center>'''Share your knowledge. It's a way to achieve immortality.'''</center><br><center>&mdash;'''Often attributed to the Dalai Lama'''</center></div>
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=== Draft of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
'''[[Vasco da Gama]]''' (c. 1469 – 24 December 1524) was a Portuguese navigator who established a sea route from [[Europe]] to [[India]].
==== Early life ====
[[Image:Statue Vasco da Gama Sines.jpg|right|thumb|220px|Statue of Vasco da Gama in [[Sines]]]]
Few details are known about Vasco da Gama's early life. He was born around 1469 in [[Sines]], a seaport in the southwest coast of Portugal, or in one of the nearby villages (the most likely candidate is Salas, where after his return from his first voyage to India he ordered the construction of a church). He was the second or third child of Estêvão da Gama and Isabel de Sodré. Vasco was named after his paternal grandfather, who served as alcaide (magistrate) of Évora.


Vasco’s father was a member of the Order of Saint James of the Sword and had a close ties with its master, D. Fernando, Duke of Viseu (a brother of the Portuguese king [[Afonso V of Portugal|Afonso V]]). He participated in the military campaign against the Moroccan town of [[Casablanca]] (1468-69) and served as alcaide-mor (chief magistrate) of Sines and Silves. Vasco’s mother was of English ancestry, the granddaughter of a nobleman named Sudley, who had fought against Castile and settled in Portugal.  <font size=1>[[Vasco da Gama|['''more...''']]]</font>




=== New Draft of the Week <font size=1>[ [[CZ:New Draft of the Week|about]] ]</font> ===
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[[Image:Sea glass.jpg|right|thumb|150px|Sea Glass]]
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'''[[Sea glass]]''' is formed when broken pieces of glass from bottles, tableware, and other items that have been lost or discarded are worn and rounded by tumbling in the waves along the shore of oceans and large lakes.  The most common varieties are green, brown or clear, while other colors, such as orange, red, yellow, cobalt blue, purple, turquoise, and black are much more rare in genuine sea glass.<!--<ref name="North American Sea Glass Association">North American Sea Glass Association. [http://seaglassassociation.org/GenuineVsArtificial.php "Genuine vs. Artificial"]  Electronic document, retrieved June 25, 2008.</ref> --> Genuine sea glass often shows signs of "hydration", a process by which the soda and lime in the glass are slowly leached out through constant contact with water, and may be easily distinguished from artificially tumbled glass by a trained eye. Sea glass has become more rare in recent decades as a result of stricter laws against littering, but may still be found along the shores of oceans and lakes world-wide.
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<font size=1>[[Sea glass|['''more...''']]]</font>
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<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
<p style="line-height:15px; padding-left:20px;">
[[:Category:Citable versions of articles|Citable]] <font size=1>('''{{PAGESINCAT:Citable versions of articles}}''')</font><br />
[[:Category:Developed Articles|Developed]] <font size=1>('''{{PAGESINCAT:Developed Articles}}''')</font><br />
[[:Category:Developing Articles|Developing]] <font size=1>('''{{PAGESINCAT:Developing Articles}}''')</font><br />
[[:Category:Stub Articles|Stubs]] <font size=1>('''{{PAGESINCAT:Stub Articles}}''')</font><br />
<small>([[:Category:CZ Live|{{PAGESINCAT:CZ Live}} total]])</small>
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----<h3 style="margin-top:0; padding-top:0.6em; border-top:1px dotted #e0e0e0;">
<big>[[CZ:Featured article|Featured Article]]: ''[[{{FeaturedArticleTitle}}]]''</big>
</h3>
{{CZ:Featured article/Current}}
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<div style='text-align: right;'><small>''[[{{FeaturedArticleTitle}}|Continued]]...''</small></div>

Latest revision as of 09:47, 31 October 2024

New Blog Post
Why is Citizendium deleting articles?


Help Write Articles about our World

Welcome to Citizendium, a wiki for providing free knowledge where authors use their real names. We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject. Our online community prides itself on being congenial and supportive.

Citizendium Getting Started
Quick Start | About us | Help system | Start a new article | For Wikipedians  


See Recent Changes—an overview of articles being worked on now.

Become a member--it's free!

Join this wiki and start an article
 
Browse the Workgroups:

Agriculture Earth Sciences Journalism Physics
Anthropology Economics Law Politics
Archaeology Education Library & Info. Sci. Psychology
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Please help today!
Please make your donations here.
Donations go to keep our servers running. See our financial report.





















Article counts

Citable (146)
Developed (1,129)
Developing (7,403)
Stubs (7,676)
(16,484 total)

There is only one good, knowledge, and one evil, ignorance.
Socrates (469 BC - 399 BC), Diogenes Laertius, Lives of Eminent Philosophers
       —add a quotation about knowledge or writing


Featured Article: Nuclear power reconsidered

After decades of failure to slow the rising global consumption of coal, oil and gas,[1] many countries have proceeded as of 2024 to reconsider nuclear power in order to lower the demand for fossil fuels.[2] Wind and solar power alone, without large-scale storage for these intermittent sources, are unlikely to meet the world's needs for reliable energy.[3][4][5] See Figures 1 and 2 on the magnitude of the world energy challenge.

Nuclear power plants that use nuclear reactors to create electricity could provide the abundant, zero-carbon, dispatchable[6] energy needed for a low-carbon future, but not by simply building more of what we already have. New innovative designs for nuclear reactors are needed to avoid the problems of the past.

(CC) Image: Geoff Russell
Fig.1 Electricity consumption may soon double, mostly from coal-fired power plants in the developing world.[7]

Issues Confronting the Nuclear Industry

New reactor designers have sought to address issues that have prevented the acceptance of nuclear power, including safety, waste management, weapons proliferation, and cost. This article will summarize the questions that have been raised and the criteria that have been established for evaluating these designs. Answers to these questions will be provided by the designers of these reactors in the articles on their designs. Further debate will be provided in the Discussion and the Debate Guide pages of those articles.

Footnotes

  1. Global Energy Growth by Our World In Data
  2. Countries, organizations, and public figures that have reconsidered their stance on nuclear power are listed on the External Links tab of this article.
  3. Pumped storage is currently the most economical way to store electricity, but it requires a large reservoir on a nearby hill or in an abandoned mine. Li-ion battery systems at $500 per KWh are not practical for utility-scale storage. See Energy Storage for a summary of other alternatives.
  4. Utilities that include wind and solar power in their grid must have non-intermittent generating capacity (typically fossil fuels) to handle maximum demand for several days. They can save on fuel, but the cost of the plant is the same with or without intermittent sources.
  5. Mark Jacobson believes that long-distance transmission lines can provide an alternative to costly storage. See the bibliography for more on this proposal and the critique by Christopher Clack.
  6. "Load following" is the term used by utilities, and is important when there is a lot of wind and solar on the grid. Some reactors are not able to do this.
  7. Fig.1.3 in Devanney "Why Nuclear Power has been a Flop"