Expert-reviewed information about the Earth. For everyone.
-
Featured Article
West Nile Virus
Since 1999, more than 30,000 people in the United States have been reported as getting sick with West Nile virus. Infected mosquitoes spread West Nile virus (WNV) that can... More »
-
Featured Gallery
Cabo de Gata-Nijar Natural Park, Andalucia,...
Cabo de Gata-Nijar Natural Park lies along the Alboran Sea of the Mediterranean coast of Andalucia, Spain. The most arid area in the entirety of Europe, it boasts varied... More »
-
Featured Article
Douglas-fir
The Douglas-fir (scientific name: Pseudotsuga) is a genus of tree that includes ar least five species found in North America and... More »
-
Featured Article
Rooftop runoff contamination
[The lead author of this article is Dennis Lye] Rooftop runoff contamination is receiving increasing attention as environmental and health issues, particularly as human... More »
-
Featured Article
Flora of Napa County, California
Napa County is a rural county in northern California encompassing nearly 500,000 acres (200,000 hectares), about 0.5 % of the landmass of the state. It is located 25 miles (40... More »
Great Basin shrub steppe
Last Updated on 2013-06-18 at 04:23
The Great Basin shrub steppe ecoregion is situated in the most northerly of the four American deserts. Unlike the other three, which have almost exclusive ties to... More »
Nonpoint source
Last Updated on 2013-06-18 at 02:18
A nonpoint source refers to a source of pollution from an origin other than a well defined point. The term is most often applied to air pollution, water pollution and noise... More »
Tamarix control
Last Updated on 2013-06-17 at 17:10
Tamarix control is a significant invasive species issue in the western USA, especially in the American southwest. The woody plant genus Tamarix, also , also known by the... More »
Chihuahuan Desert
Last Updated on 2013-06-16 at 21:48
The Chihuahuan Desert encompasses one of the most biologically diverse arid regions on Earth. This ecoregion extends from within the United States south into Mexico. This... More »
Colorado Plateau shrublands
Last Updated on 2013-06-16 at 21:44
The Grand Canyon epitomizes the Colorado Plateau, an area that has been called the "land of color and canyons." The Plateau can be thought of as an... More »
Mojave Desert
Last Updated on 2013-06-16 at 21:42
The Mojave Desert is the smallest of the four American deserts. While the Mojave lies between the Great Basin Shrub Steppe and the Sonoran desert, its fauna is more closely... More »
-
Articles -
Blog Posts -
Galleries -
News -
Resources -
Videos
- Include Content from all Sub-Sections
| Type | Title | Author | Date |
|---|---|---|---|
| Retrieving data... | |||

Site Options