This Week in PNAS

In the early, online version of the Proceedings of the National Academy of Sciences, researchers from China and the US describe DNA methylation profiles that appear to show promise for distinguishing tumor tissue from neighboring normal tissue, along with potential markers for diagnosing cancer and predicting metastases.

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In a survey, about half of Canadian government scientists say they still feel as though they cannot speak freely, ScienceInsider reports.

The Atlantic reports that biohacker Josiah Zayner regrets injecting himself with the CRISPR gene-editing tool on stage.

Clinicians in China are moving ahead with a number of CRISPR trials, NPR reports, as the US embarks on its first.

In Nature this week: genomic approaches applied to study Neolithic and Bronze Age Europeans, and more.