Ecology, Energy, Economy


What is the role of coal in the United States?
Due to its relatively low cost and abundance, coal is used to generate about half of the electricity consumed in the United States. Coal is the largest domestically-produced source of energy. Coal use, however, results in higher amounts of carbon dioxide per unit of energy than [...]

Federal Government To Cut GHG Emissions

President Obama announced on January 29 that the federal government—the largest energy consumer in the U.S. economy—will achieve a 28% reduction in its greenhouse gas (GHG) emissions by 2020. Reducing and reporting GHG emissions, as called for in Executive Order 13514 on Federal Sustainability, will ensure that the government leads by example in building the [...]

Environmental Protection Agency: Climate Change Danger!

The EPA announced:
“After a thorough examination of the scientific evidence and careful consideration of public comments, the U.S. Environmental Protection Agency (EPA) announced today that greenhouse gases (GHGs) threaten the public health and welfare of the American people.” [view the whole statement at]
The timing of this announcement at the opening of the Copenhagen Climate [...]

Scientists Fly to the Ends of the Earth

Broomfield, Colo. – NOAA scientists took off Saturday on the second phase of a mission that, when complete, will provide a detailed view of how carbon dioxide and other greenhouse gases are distributed globally. Monitoring the increasing levels of greenhouse gases and black carbon aerosols in the atmosphere is crucial to understanding human-caused climate change. [...]

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