Main Page | See live article | Alphabetical index The Gaia Hypothesis holds that the entire earth may be considered a single organism (Gaia), which possesses some sort of Earth immune system. Some proponents of this theory, for example, hold that humankind can be considered a infection of Gaia, and that AIDS is a attempt by this immune system to reject the infection. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.