There is a gender imbalance between in the upper echelons of academia, and Bitesize Bio's Judith Brouwer says that it is not due to a lack of interest in science by women. "The number of men and women who start their studies is approximately equal … but the percentage of females declines rapidly as we move up the academic career ladder," she writes.

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In PNAS this week: genomic study of group B Streptococcus evolution, selection on the X chromosome in great apes, and more.

Changing the fat and fiber content of people's diets affects their gut microbiome, metabolome, and colon cancer risk, researchers say.

Broken links are found throughout academic publications, and some services are trying to combat such link decay.

Nick Stockton at Wired says that a pause in studying genome-editing tools should be used to find a path forward.