Threshold 3: New Chemical Elements | Big History Project

Large stars die, and then explode into massive supernovae. This scatters all the elements of the periodic table throughout the Universe, which results in the third threshold of complexity -- the creation of chemical elements. Website: Facebook: Twitter: Click here to see more videos:

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The World History Project

History is more than a list of famous people, more than a series of events to memorize. It is a story -- of societies and nations, cities and villages, families and individuals. A network of connected and intertwined narratives. By exploring the past, we can better understand our present and imagine