Arrowhead Research this week announced that it has begun dosing patients in a phase I study of its siRNA-based hepatitis B treatment ARC-520.

Initiation of the study marks a key milestone for the company as it pursues a return on its 2011 acquisition of Roche’s RNA therapeutics assets, which included ARC-520 and cost Arrowhead nearly 10 percent of its equity.

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Gene drives might run into biological resistance, the Economist reports.

Forensic experts exhumed painter Salvador Dalí's body to collect DNA for a paternity test, CBS News reports.

Yale Environment 360 writes that synthetic and conservation biologists aren't always on the same wavelength, but they are trying to reach an understanding.

In Science this week: full CRISPR locus integration complex structure, and more.