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The smallest avian genomes are those of hummingbirds, report T. Ryan Gregory and his colleagues in Proceedings of the Royal Society B. According to the paper abstract, the genome sizes of birds are thought to be inhibited by flight's metabolic demands and by the relationship between nuclear DNA content and the size of red bloods cells.

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A study of families explores how children transmit SARS-CoV-2, according to the Associated Press.

US Agricultural Research Service scientists have sequenced the genome of the Asian giant hornet.

According to the Economist, pooled testing for COVID-19 could help alleviate strains on testing labs.

In Science this week: MIT researchers outline approach dubbed translatable components regression to predict treatment response among IBD patients.