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  • PBS NewsHour

PBS NewsHour | Carl Zimmer on Bird Flu and Beyond | PBS

Duration: 07:36
Program: PBS NewsHour #10355
Broadcast Date: Jun. 21, 2012

Here are just a few of the fascinating facts from Carl Zimmer's book, "A Planet of Viruses": If you put all the viruses in the ocean on a scale, they would equal the weight of 75 million blue whales. And if you lined up all those viruses end to end, "they would stretch out past the nearest 60 galaxies."

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Post Date: June 21, 2012