5 Human Activities That Can Be Seen From Space

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For the last 40 years satellites have been watching over us from space. Throughout this time period they have taken countless images of our earth’s surface and now, in 2015 those images tell a story. They show how our land has been changed by human activities. Scientists agree unanimously that human activity has been the catalyst for a variety of extreme changes to our climate. This is a great short, eye opening video.

Source : Youtube