This Week in Nature

In Nature this week, a team of German researchers report on the discovery that microRNA-34a is induced in the aging heart, and that in vivo silencing or genetic deletion of the small, non-coding RNA reduces age-related cardiomyocyte cell death. Additionally, inhibition of the miRNA reduces cell death and fibrosis following heart attack and improves recovery.

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A small study finds differences between three genomic prostate cancer tests, Medscape reports.

In Nature this week: shared genetic architecture for asthma and allergic diseases, and more.

A survey of Canadians finds them to be divided on genetically modified food, the Ottawa Citizen reports.

Science speaks with the University of Michigan's Jedidiah Carlson, who has tracked population genetic discussions at white nationalist sites.