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NMR, Anywhere, Anytime

German researchers are working on scaling down the size of the magnets needed to NMR machines, reports Technology Review. RWTH Aachen University's Federico Casanova and his colleagues have made a magnet that "is about the size of a standard D battery and weighs 500 grams," according to Tech Review. As they report in their Angewandte Chemie article, the researchers' design builds off the Halbach array; they stacked three trapezoidal and filled the gaps with rectangular magnetic block. The magnet was able to generate a 0.7 Tesla field. Casanova and his colleagues write that "as the magnet system requires extremely low power, it could be operated in the future with batteries and single-chip electronics, so that high-resolution NMR spectrometers will become portable tools to analyze samples anywhere."

The Scan

Tens of Millions Saved

The Associated Press writes that vaccines against COVID-19 saved an estimated 20 million lives in their first year.

Supersized Bacterium

NPR reports that researchers have found and characterized a bacterium that is visible to the naked eye.

Also Subvariants

Moderna says its bivalent SARS-CoV-2 vaccine leads to a strong immune response against Omicron subvariants, the Wall Street Journal reports.

Science Papers Present Gene-Edited Mouse Models of Liver Cancer, Hürthle Cell Carcinoma Analysis

In Science this week: a collection of mouse models of primary liver cancer, and more.