100:00:04,429 --> 00:00:12,629subtitles by Red Bee Media Ltd200:00:12,630 --> 00:00:17,220This is a filmabout one very simple question.300:00:17,220 --> 00:00:19,620How did we get here?400:00:25,980 --> 00:00:30,580These are the elements and compoundsfrom which all humans are made.500:00:30,580 --> 00:00:34,090They're incredibly,almost embarrassingly common.