The BEST episodes directed by Alice Harper
#1 - Origins (1): Earth is Born
NOVA - Season 31 - Episode 11
NOVA traces Earth's geologic evolution. The program chronicles the formation of Earth from solar system dust particles that coalesced and became one of the four rocky planets closest to the sun.
#2 - Origins (2): How Life Began
NOVA - Season 31 - Episode 12
NOVA chronicles the discoveries that led to scientists' current understanding of how the universe was formed. The program describes the serendipitous discovery of the Cosmic Microwave Background (CMB) radiation, a faint energy signal believed to be left over from the big bang.