Without germs, we're nothing

Bring on the bacteria
Can't live with 'em. Can't live without 'em. Some bacteria can easily kill us. But without bacteria, we'd die.
Dennis Kunkel

Bacteria outnumber us a trillion to one. So it's a good thing most of them are friendly.

Gerald Callahan, the author of Infection: The Uninvited Universe, talks about why we need bacteria to survive.

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