Are We Alone? Galactic Civilization Challenge | Space Time | PBS Digital Studios

Are We Alone? Galactic Civilization Challenge | Space Time | PBS Digital Studios

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Could alien civilizations predict the fate of our planet?

On Earth we’re very concerned about developing a sustainable version of civilization, but the question we can ask if we step back and take the 10,000 light year view is, how do we know if that’s even possible? Unless the university is very biased against it, we are not the first civilization that has occurred […]

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Scientific Revolution: Crash Course European History #12

Scientific Revolution: Crash Course European History #12

Hi I’m John Green and this is Crash Course European History. Okay so look: It has been bleak so far. We’ve had the Black Death, the 116 Years’ War, a series of religious wars that culminated with a 30 Years War that killed 20% of Central Europe. We’ve had the little ice age and witch […]

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