"...[a]ll of human history has happened on that tiny pixel, which is our only home." - Carl Sagan, talking about the "Pale Blue Dot" photograph. The pale blue dot is, of course, our very own planet Earth.
At the end of his documentary/presentation film An Inconvenient Truth, Al Gore condenses the message down into four simple words:
That's all we've got.
It's Earth Day today. What have you done for our planet lately?
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References:
Earth Day
Pale Blue Dot photograph
An Inconvenient Truth
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