The genome-editing tool CRISPR/Cas9 took off so fast that it left the University of California, Berkeley's Jennifer Doudna spinning. And by the spring of 2014, she says in an essay at Nature News, it was keeping her up at nights.

"I was regularly lying awake at night wondering whether I could justifiably stay out of an ethical storm that was brewing around a technology I had helped to create," Doudna writes.

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The Jackson Laboratory has filed a complaint accusing Nanjing University of breeding and re-selling its mouse models, the Hartford Courant reports.

Oxford researchers are turning to virtual reality to visualize genes and regulatory elements, Phys.org says.

In Science this week: neutrophils rely on microRNA to protect against lung inflammation, and more.

China is moving forward with plans to sequence a million citizens, the Wall Street Journal reports.