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Wonders of Life: 1x4
Size Matters
The fourth episode sees Brian in Australia looking at how the size of life affects each plant and animal, and how long it can survive.
1 - 1What Is Life? Jan. 27, 2013
1 - 2Expanding Universe Feb. 03, 2013
1 - 3Endless Forms Most Beautiful Feb. 10, 2013
1 - 4Size Matters Feb. 17, 2013
1 - 5Home Feb. 24, 2013