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Strength in Numbers

At the Ecological Society of America's annual meeting this week, the University of Chicago in Illinois' Tim Wootton and Cathy Pfister told attendees that they suspect that sheer numbers are more important than genetic diversity to species threatened with extinction, says Ed Yong at the Nature News blog. The husband-and-wife team's results come from a 12-year-long experiment conducted on extinction and conservation.

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The US Centers for Disease Control and Prevention has identified a small group of breakthrough COVID-19 cases, the Wall Street Journal reports.

The New York Times reports that the US Department of Defense is to use genetic genealogy approaches to identify the remains of unknown soldiers.

Vox and Nature discuss the importance of preparing for the next pandemic.

In Nature this week: comparison of five circulating tumor DNA assays, resequencing analysis of lettuce gives insight into its domestication, and more.