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Technician Samuel Weatherwax works outside repairing parts of geothermal power plants.
Microbiologist Aindrila Mukhopadhyay studies how microbes convert plants into biofuels.
A shop owner from Palestine struggles to make a better life for his family.
Employees Push for Living Wage, 'Extreme by Design' and Remembering Nelson Mandela
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Appraisal: Chinese Rhinoceros Horn Cups, ca. 1700, from Tulsa Hour 1
An intimate portrait of one of the 20th century's greatest leaders
Downton Abbey stars and creators on changing times and characters in the series.
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Return to Downton Abbey, where disasters — large and small — threaten.