This Week in Science

In Science Translational Medicine this week, investigators at Stanford University School of Medicine show that miR-21 "blocks abdominal aortic aneurysm development and nicotine-augmented expansion." Because of this, the authors suggest modulation of its expression "shows potential as a new therapeutic option to limit AAA [abdominal aortic aneurysm] expansion and vascular disease progression."

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A phylogenetic analysis indicates two venomous Australian spiders are more closely related than thought, the International Business Times reports.

Technology Review reports that 2017 was the year of consumer genetic testing and that it could spur new analysis companies.

In Science this week: CRISPR-based approach for recording cellular events, and more.

A new company says it will analyze customers' genes to find them a suitable date, though Smithsonian magazine says the science behind it might be shaky.