All the DNA on Earth

There are some 50 trillion trillion trillion DNA base pairs on Earth, the New York Times reports.

A trio of researchers from the University of Edinburgh sought to calculate all the DNA in the biosphere as part of study of biodiversity.

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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.