VIDEO | by GeoBeats

Earth Day: 5 Ways the World Has Changed in the Last 100 Years

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VIDEO DESCRIPTION:
Without a doubt, humans have dramatically altered various facets of Planet Earth in a matter of centuries. As we mark Earth ...
Day, it's worthwhile to reflect on 5 ways we have changed our planet in the last 100 years.
Posted: 04/19/2013 | Views: 328,157 | Duration: 03:06
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