The Landsat Program is a NASA-led operation that shows us earth from space. It helps us understand our environment and has saved millions of lives by allowing scientists to predict crop yields worldwide.
At the heart of the program's early years was a woman named Valerie Thomas, a brilliant young African American physicist who would become one of the most respected inventors of her generation.
Episode 8: Valerie Thomas in 3D
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Episode 9: The Fall of the Forgotten City of Cahokia
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