|Tuesday, Apr 23, 2013 - 4:00 PM
"Australia's First 4 Billion Years: Life Explodes"
How did life storm the beaches and dominate planet Earth? Ancient Australian fossils offer clues. Host Richard Smith introduces Earth's forgotten pioneers: the scuttling arthropod armies that invaded the shores and the waves of green revolutionaries whose battle for the light pushed plant life across the face of a barren continent. Part 2 of 4 G
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