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NOVA
The Planets: Inner Worlds
Season 46
Episode 12
The rocky planets—Mercury, Venus, Earth and Mars—were born of similar material around the same time. Yet only one of them supports life. Were Earth's neighbors always so extreme? And is there somewhere else in the solar system life might flourish?
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The story of the dolphin reveals how intelligence evolved, step by step, over billions of years.
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Step into the stunning cave that’s reshaping our understanding of prehistoric art.
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53:41
Witness how Native North Americans have generated scientific knowledge over thousands of years.
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Follow the relentless quest that led to a breakthrough treatment for a deadly disease.
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53:40
Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago.
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Follow the Artemis mission to bring humanity back to the Moon for the first time since Apollo.
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53:25
Surprising evidence at the world’s oldest temple overturns our understanding of human history.
