If it was possible to take a full scan of all of the DNA of every cell in and on your body the results would be startling: Only 1 percent would be human. The other 99 percent comprises all of the bacteria, fungi, viruses and other microbes you literally cannot live without.
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Selects: How Narcolepsy Works
52:41

Rope, yeah ROPE!
43:31

Short Stuff: Did a shipwreck double the size of the United States?
11:46