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Aug 01, 2009
Permafrost is defined as soil that has remained at or below 0 degrees C (32 degrees F) for two years or more. There does not need to be ice or snow present to identify permafrost. Most permafrost is located near the North and South Poles and dates back millions of years. The area of the Earth covered by permafrost is constantly shrinking and global warming is credited with the loss of large amounts of ancient permafrost.
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Jan 23, 2009
PC power consumption: does it really matter?
More than 30 billion kilowatt-hours (108 petajoules) of energy is wasted because many of us simply forget to shut down our computers when we aren’t using them.
If we could improve the efficiency of how we use our PCs, the value of energy saved would be over $3 billion dollars! What’s more the CO2 emissions from just 15 computers are equivalent, in energy terms, to the gas consumption of one car!
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Dec 23, 2008
The US Environmental Protection Agency defines climate change as “any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period (decades or longer).” The EPA then defines global warming as “an average increase in the temperature of the atmosphere near the Earth’s surface and in the troposphere…”.
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