Explains what groundwater is, how and where it occurs, how the quality of our groundwater is being affected by human activities, and the detrimental impact this has on plants and animals. (Updated: February 22, 2012)

Provides an overview of Dominica, including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the entry.

Provides an overview of Bosnia and Herzegovina, including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the entry.

Provides an overview of Bolivia, including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the entry.

Facts about avian influenza, or bird flu, and one strain of it, avian influenza A, also known as H5N1. Covers the origin, transmission to humans, risks, symptoms, and treatment. (Updated: June 2, 2012)

Explains what bioremediation is, how it works, whether it is a safe process, the length of time it takes, and reasons for doing it. (Updated: September 23, 2011)

Provides an overview of Bhutan, including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the entry.

Provides an overview of Belarus, including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the entry.

This in-depth resource discusses the abyssal zone of the ocean. Includes a diagram and many facts about this zone.

Provides an overview of British Indian Ocean Territory (United Kingdom), including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the...

Gives short descriptions of the many different types of biomes found on land all over the world. (Updated: February 22, 2013)

An explanation of how a carbon footprint is calculated. Includes graphs comparing countries, sources of greenhouse gas emissions, and individual activities. (Updated: April 5, 2013)

Provides an overview of Benin, including its geography, natural resources, history, government, economy, and much more. Maps and images are also included, along with sources used to create the entry.

Discusses features of the unique ecoregion, the Aleutian Islands tundra. Covers wildlife, threats to preservation, and conservation initiatives.(Updated August 26, 2012)

Describes the features of the air quality assessment indices used in a variety of countries around the world. (Updated: October 25, 2011)

Explains what carbon dioxide is, where it is found, sources of it, and describes human activities that contribute to carbon depletion and increased levels of carbon dioxide in the atmosphere. (Updated: February 22, 2013)

Information about the Geographic South Pole. Explains how it is defined, the marker (which must be adjusted each year due to ice movements) that identifies its location, and 'other' South Poles, i.e., the Ceremonial South Pole and the...

Article discussing the very real impact of climate change on human health, and the importance of adaptation planning to address public health problems. These problems can include heat-related distress, chronic conditions affected by...

Explains what permafrost is, the different classes, features of deep permafrost, what happens when it melts, difficulties with constructing anything on top of it, characteristics of tundra, and patterns left in the tundra by the...

Explains, in scientific terms, what hydroelectric energy is and how it is produced. Discusses the lifespan of a hydroelectric facility, the risks and adverse effects of producing hydroelectricity, and how this form compares with other...

A scientific explanation of what a boiling point is, the factors that can alter a liquid's boiling point, changes of state that occur at the boiling point, and how the normal boiling point relates to a liquid's vapor pressure. (Updated:...

A collection of articles on methods used to investigate changes in processes that are, and have been, affected by climate. It also covers the discoveries that have been made about climate change in the Earth's recent and ancient past.

Engaging and very informative article that explains what elements are, some of their history, how they are represented, the categories of elements, the periodic table, and how they are structured and classified.

Article describing damage caused to coral reefs in the Caribbean after an extended period of extreme heat in 2005 that raised the ocean temperature in that area. The potential, devastating consequences to humans of coral reef destruction...