Earth Day 2010 marks the 40th anniversary of the first Earth Day, a day to appreciate Earth's environment and to take action to improve it. Even small things can help: the Great Circle Mapper is developed using solar power. Please consider doing something special for Earth Day, whether it's as simple as turning off a light or saving some water, or something bigger like participating in one of the many Earth Day events.
Afterwards, you can use the Great Circle Mapper to explore Earth in an environmentally friendly way from top:
... to bottom:
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Karl L. Swartz.
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