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To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.
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Video Library. Go to the library of all the NOVA Labs videos, including the Evolution Lab videos: Evolution 101, Training Trees, Fossils: Rocking the Earth, DNA Spells Evolution, and...
Watch how natural selection relies on DNA to mold organisms to suit their environments. As our planet has coughed up new oceanic islands and ripped its land masses apart, organisms have found ...
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Phosphate-buffered saline (PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate , sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate .
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