<p>Rosie Redfield talks about her evidence that a bacterium cannot grow on arsenic instead of phosphorus. </p>

Rosie Redfield talks about her evidence that a bacterium cannot grow on arsenic instead of phosphorus.

<p>Rosie Redfield talks about her evidence that a bacterium cannot grow on arsenic instead of phosphorus.&nbsp;</p>

TWiM #32: Not the shadow biosphere

This Week in Microbiology is a podcast about unseen life on Earth hosted by Vincent Racaniello and friends. Following in the path of his successful shows 'This Week in Virology' (TWiV) and 'This Week in Parasitism' (TWiP), Racaniello and guests produce an informal yet informative conversation about microbes which is accessible to everyone, no matter what their science background.

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TWiM #32: Not the shadow biosphere

TWiM #32: Not the shadow biosphere

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