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Coal
Coal is a carbon-containing rock formed by the debris from the decay of ferns, vines, trees and other plants which flourished in swamps millions of years ago. Over time, the debris became buri...
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Planning for the end of oil (7:23)
Date of Video: Feb. 2010 As the world's attention focuses on the perils of oil exploration, Richard Sears, an expert in developing new energy resources, talks about our inevitable and necessary move ...
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Deepwater Horizon: one year later (6:18)
A year has passed since the start of the BP Deepwater Horizon disaster—the largest accidental oil spill in history. Over a span of five months, a total of more than 170 million gallons of oil gu...
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A Climate Minute - The Greenhouse Effect
The 'Greenhouse Effect' discovered in 1824 by Joseph Fourier is what keeps the earth from being a frozen ball in space. Without greenhouse gases (GHG's) the temperature of earth would be below freez...
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Environmental advantages-disadvantages of sources
Extraction-purification methods
Formation of coal, oil and natural gas
Synfuels
World reserves and global demand