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The Challenge of Shaping a Programmer

Thomas Mailund has to teach a programming class, and he's not happy about it -- he finds teaching the subject difficult. One reason is having to give lectures, even though he thinks that small groups are best for learning to code. Also, students have to want to be problem-solvers. "Programming is all about solving a larger problem by working around a big pile of smaller problems," he writes. "You get stuck all the time, and need to get yourself 'unstuck.' With experience you will do this faster and faster, and often manage to avoid a lot of the small problems in the first place, but you need to get this experience by actually solving the small problems."

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.