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Tree of Life Portal
Welcome to the Tree of Life Portal, the place where anyone can explore and learn about species of life and their interelationships — a field of study known as phylogenetics. The root of the Tree of Life begins with the three recognized domains of cellular life, Archaea, Bacteria and Eukaryotes, with Viruses being of uncertain origin.
It's easy to explore the Tree... just hover over the
« Directory to the left, navigating with the mouse and clicking on individual branches to learn more.
The Tree of Life Portal project is just starting, and we're looking for contributors to help expand it. The Tree also includes the Animals Portal and the Plants Portal, with more domain-specific life portals on the way. LEARN MORE »
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Sample Gallery: Animals in Costa Rica
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Sample Gallery: Animals in Costa Rica
Last Updated on 2009-03-30 at 18:43
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Bacteria (in-depth)
Last Updated on 2009-03-24 at 00:51
Note: this article is a draft from Citizendium. If you'd like to help improve the article, please register with Citizendium (and let them know you've been referred by the Tree of... More »
Bacteria (overview)
Last Updated on 2009-03-24 at 00:50
Bacteria (singular: bacterium) is a large group of unicellular microorganisms. Formerly known as Eubactaria or "true bacteria" to distinguish them from Archaea (formerly known as... More »
Archea (IPY Merge)
Last Updated on 2009-03-22 at 02:27
The Archaea are a group of prokaryotes (cells that lack nuclei and other organelles) that were first discovered in extreme environments such as hot springs, acid waters and... More »
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