The new excitement about more fuel-efficient automobiles is a direct response to rising fuel prices and environmental concerns. Anyone traveling a great deal is concerned about reducing fuel expenses, and everyone should be concerned about environmental issues related to fossil-fuel burning.
The distance around the earth at the equator is roughly 24,901 miles. A group of scientists, engineers and boat builders are building a solar-powered boat that is designed to make a trip around the world in about four (4) months at a speed of 10 knots, using only power from the sun.
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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