Archive for September, 2009

Latin America and the Caribbean (collection)">Latin America and the Caribbean (collection)

Posted by Arielle.conti on September 30th, 2009

Welcome to the Latin America and the Caribbean Collection! This collection focuses on environmental and social issues in a diverse political, cultural, and environmental framework. As one of the highest biodiversity hotspots of the world, this collection attempts to address this complexity through three main geographic regions (Mexico and Central America, the Caribbean, and South America) by profiling each country and ecosystem.

Management and conservation of wildlife in the Arctic">Management and conservation of wildlife in the Arctic

Posted by Arielle.conti on September 29th, 2009

The term “wildlife” is used in this chapter in the modern sense inclusive, relevant to the Arctic, of non-domesticated birds and mammals living primarily in natural habitats in both terrestrial and marine environments. Wildlife management is an applied science that had its main development in continental Europe and North America.

Origin and age of lakes">Origin and age of lakes

Posted by Arielle.conti on September 28th, 2009

Lakes are formed by geological, climatological, biological, and extraterrestrial (meteorites) mechanisms. While most lakes are formed by catastrophic events, others are created more gradually.

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Posted by Arielle.conti on September 25th, 2009

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Posted by Arielle.conti on September 25th, 2009

The Congressional Research Service (CRS) is the public policy research arm of the United States Congress. As a legislative branch agency within the Library of Congress, CRS works exclusively and directly for Members of Congress, their Committees and staff on a confidential, nonpartisan basis.

Renewable Energy
Photovoltaics
Wind farm
Largest Solar Furnace
Nuclear Power
Clean Air Act, […]

Carbon">Carbon

Posted by Arielle.conti on September 25th, 2009

Carbon is the sixth most abundant element in the universe and is unique due to its dominant role in the chemistry of life and in the human economy. It is a nonmetallic element having the symbol C, the atomic number 6, an atomic weight of 12.01115, and a melting point about 360ÂșC.

Lake effect snow">Lake effect snow

Posted by Arielle.conti on September 24th, 2009

During the fall and winter, many areas of the eastern United States and Canada experience tremendous amounts of snowfall. This snow, known as “lake-effect snow,” is generated from the temperature contrast between the cold arctic air moving over the relatively warm waters of the Great Lakes (or other large body of water).

Perlite">Perlite

Posted by Arielle.conti on September 23rd, 2009

Perlite is a type of volcanic glass that expands and becomes porous when it is heated. When heated, it can expand to as much as twenty times its original volume. This expansion is the result of heated water: when the glassy lava rock is heated to 1,600 degrees Fahrenheit (871 degrees Celsius)

Food web">Food web

Posted by Arielle.conti on September 22nd, 2009

A food web is a graphical description of feeding relationships among species in an ecological community, that is, of who eats whom (Fig. 1). It is also a means of showing how energy and materials (e.g., carbon) flow through a community of species as a result of these feeding relationships.

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Posted by Arielle.conti on September 18th, 2009

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