old & odd: archaea, bacteria & protists - crashcourse biology #35 Published 11 years ago • 1.8M plays • Length 12:17 Download video MP4 Download video MP3 Similar videos 11:50 old & odd: archaea, bacteria & protists | crash course biology | khan academy 2:29 the three domains of life -bacteria-archaea-eukarya 9:51 are we all actually archaea? 6:53 archaea: the hidden domain of life 17:56 evolution & classification of life | from single celled bacteria to humans