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  • Fundamental principles of energy Featured Article Fundamental principles of energy Fundamental principles of energy

    The concept of energy as we now understand it—a conserved quantity that represents the ability to do work—has been with us for less than two centuries. Yet its central role... More »

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Focus: Impacts of Humans and Their Economy on the Environment Last Updated on 2009-02-27 21:45:49 The National Science Foundation (NSF) has issued a Dear Colleague Letter to the scientific community ". . . encouraging increased research . . . on the links among environment, society and the economy." Image Above: NSF is supporting research on climate change and Earth's environment, society and economy. Credit: Department of Sustainability and Environment, State of Victoria, Australia More »
Fundamental principles of energy Last Updated on 2008-08-29 00:00:00 The concept of energy as we now understand it—a conserved quantity that represents the ability to do work—has been with us for less than two centuries. Yet its central role in human affairs dates to the time of the first humans, its role in shaping the physical and biological nature of the Earth dates to the planet's birth, and the story of Big Bang itself is told in terms of energy and matter. Crude oil gushing from the prodigious Spindletop, TX field in 1901. The discovery of other large oil fields in the early 20th century launched a global economic and population boom, as well as wide scale environmental change. Advances in our understanding of energy have produced unparalleled transformations of society, as exemplified by James Watt’s steam engine and the discovery of oil and its use as a fuel. Formalization of the concept of energy and identification of the laws... More »
Encyclopedia of the Earth Last Updated on 2008-07-08 21:29:44 Welcome to the Encyclopedia of Earth, a new electronic reference about the Earth, its natural environments, and their interaction with society. The Encyclopedia is a free, fully searchable collection of articles written by scholars, professionals, educators, and experts who collaborate and review each other's work. The articles are written in non-technical language and will be useful to students, educators, scholars, professionals, as well as to the general public. More »
Earth News Top Stories Last Updated on 2008-06-26 23:47:10 The Earth News is one component of the Earth Portal, a comprehensive resource for timely, objective, science-based information about the environment, with other components including the Encyclopedia of Earth, and the Earth Forum.   More »