Growing up in poverty and under other social stresses shortens kids' telomeres, making them more vulnerable to cancer and aging-related disorders, Quartz reports.

A study from Daniel Notterman and his colleagues drew on data from the multi-year Fragile Families and Child Wellbeing Study of 4,500 children born between 1998 and 2000 in urban areas. For this, Notterman and his team focused on the extremes and examined the DNA of the 40 kids with the most and least advantages from that study.

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CNN reports that researchers have tied a new variant to opioid addiction risk.

Organoids derived from patients' tumors may help determine what chemotherapy treatment patients would benefit from, according to New Scientist.

An initiative from GenomeAsia 100K hopes to increase the number of South Asians in genetic research, according to NBC News.

In Science this week: genomic analysis of ancient and modern horses indicates population turnover, and more.