The Habitable Planet
Many Planets, One Earth (#101)
The early Earth was a much different planet than the one we know today. Ancient rocks provide evidence of the emergence of oxygen in the atmosphere and of a frozen Snowball Earth. Watch it Online [28 minutes]
This episode has not aired in the past few months on Iowa Public Television.
Series Description: This series begins with an overview of the Earth's systems — geophysical, atmospheric, oceanic, and ecosystems — as they exist independently of human influence and explores the effect that human activities have on the different natural systems. Topics include human population growth and resource use, increasing competition for fresh water, and climate change.
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