Australia fossil microbes: http://online.liebertpub.com/doi/abs/10.1089/ast.2013.1030
Ed Yong's awesome article about the origin of the mitochondria: http://nautil.us/issue/10/mergers--acquisitions/the-unique-merger-that-made-you-and-ewe-and-yew
History of "c" as the speed of light: http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/c.html
Ask Joe #1: http://www.youtube.com/watch?v=wkSpmTvCRJA Ask Joe #2: https://www.youtube.com/watch?v=TJvWQMt95A8
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