At Scientific American, Melinda Wenner interviews Jeremy Nicholson, a metabolomics expert, who now heads the department of biomolecular medicine at Imperial College London. Nicholson talks about how important metabolites are, especially gut microbes, in systems biology research and for finding new drug targets. "Almost every sort of disease has a gut bug connection somewhere," he tells Wenner.

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The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

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