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In this article, we'll examine scientific ideas about the origin of life on Earth. The when of life's origins (3.53.53, point, 5 billion years ago or more) is well-supported by fossils and radiometric dating. But the how is much less understood. In comparison to the central dogma or the theory of evolution, hypotheses about life's origins are much more...hypothetical. No one is sure which hypothesis is correct - or if the correct hypothesis is still out there, waiting to be discovered.

28 min video on DNA, RNA, protein

5:35 minute video on ATP hydrolysis

4 min video going over the idea backed by research that your brain really is like a muscle: the more you use it, the stronger it gets.

Khan Academy Lytic and Lysogenic viral cycles 5:10 video