Origins: How Life Began
This episode highlights the most radical transformation in the history of our planet and perhaps the cosmos: the moment when inert, lifeless matter managed to organize itself into life. However it began, life may have developed as early as a few hundred million years after the formation of the planet, possibly at the earliest moment that conditions allowed. Afterward, it increased in complexity over the course of hundreds of millions of years, until primitive organisms in the oceans started converting carbon dioxide in the atmosphere into a waste molecule – oxygen. This reactive gas combined with iron in seawater. Later, it began to build up in the atmosphere, setting the stage for a whole new class of organisms – including human beings – that thrived on oxygen.
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CC - Closed Caption
HD - High Definition
16:9 - Anamorphic Widescreen
LTR - Letterbox
DVI - Descriptive Video Information for the visually impaired
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