Subtitle preview:
1
00:00:39,789 --> 00:00:42,459
<i>MAN NARRATING:</i>
<i>As the 21st century began,</i>
2
00:00:42,542 --> 00:00:46,171
<i>human evolution was at a turning point.</i>
3
00:00:46,254 --> 00:00:51,176
<i>Natural selection, the process by which</i>
<i>the strongest, the smartest,</i>
4
00:00:51,259 --> 00:00:54,888