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Two articles in this week's issue of Science provide insight into the function of the ribosome in bacterial protein synthesis, specifically how its structure affects decoding and translocation in Thermus thermophilus. Work led by first authors T. Martin Schmeing and Rebecca Voorhees of the MRC Laboratory of Molecular Biology, Cambridge, resolved the crystal structure of the ribosome bound to elongation factor-Tu and amino-acyl tRNA, lending insight into how EF-Tu aids decoding.

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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.