The modern, molecular hunt for the world's biodiversity

The news is full of announcements about newly discovered forms of life. This fall, we learned of a 30,000-year-old giant virus found in frozen Siberia. Until now, known viruses have contained so little genetic information that people have questioned whether they can even be thought of as living. But giant viruses like this one contain as much information as many bacteria, which are certainly alive, and are so big they can be seen with an ordinary microscope.

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