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Putting Feces to Work

This one's not for your lunch break: Daisy Ginsberg and James King, from London's Royal College of Art, teamed up with the University of Cambridge's International Genetically Engineered Machine Jamboree team to create a "Scatalog" — a briefcase full of wax stool sample models flecked with different colors. The Cambridge group transformed E. coli "into a living, color-coded chemical detector they dubbed E. chromi," The Scientist reports. "E.

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The Wall Street Journal reports on gaps in COVID-19 testing affecting less affluent urban areas and rural locations.

According to NBC News, new SARS-CoV-2 variants are making it harder for researchers to model the course of the pandemic.

The New York Times reports that experts say President Joe Biden's goal of vaccinating 1 million people a day in the US in the next 100 days is too low a bar.

In Science this week: single-cell lineage tracing technique applied to study lung cancer metastasis, and more.