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NOVA
How—and why—DNA Testing Uses Biased Reference Databases
Because of the Eurocentric bias of genetic reference databases, DNA ancestry test results for individuals of African and Asian descent are often less detailed than results for individuals of European descent.
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1:52:42
The story of how African-American Percy Julian defied the odds to become a famous chemist.
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What led to the devastating floods that Hurricane Katrina unleashed on New Orleans?
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Journey back to the beginning of everything: the universe, Earth, and life itself.
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50:52
Journey back to the beginning of everything: the universe, Earth, and life itself.
Unlock with PBS Passport
51:52
Journey back to the beginning of everything: the universe, Earth, and life itself.
Unlock with PBS Passport
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Combining the laws of the universe in one theory that explains it all is the Holy Grail
