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Planet of Altered States
markwarner » 9am - Jul 2, 2010
Natural and human-caused change captured in these extraordinary image...
Rating: 2.7 (84 Votes)
Category: Geography
Natural and human-caused change captured in these extraordinary image sequences covering years and decades of time. Earth is constantly changing. Some changes are a natural part of the climate system, such as the seasonal expansion and contraction of the Arctic sea ice pack. The responsibility for other changes, such as the Antarctic ozone hole, falls squarely on humanity's shoulders. NASA's World of Change series documents how our planet's land, oceans, atmosphere, and Sun are changing over time.
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