This Week in Science

In Science this week, a team led by Stanford University researchers report the architecture of a complete, 32-protein, RNA polymerase II transcription pre-initiation complex. The structure was determined using cryo-EM and a combination of chemical cross-linking and mass spectrometry, and showed a "marked division" in two parts — one containing all the general transcription factors and the other pol II.

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The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

Researchers report using genotyping to tie together illegal ivory shipments and trace them back to a handful of cartels, the New York Times reports.

Researchers find that historical factors influence which genes are the most highly studied, the Atlantic reports.

In Nature this week: genomic ancestry analysis of Sardinians, current noncoding mutations in colorectal cancer, and more.