This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, an international team led by investigators in Australia presents evidence suggesting that the arrival of humans to New Zealand hastened the disappearance of a group of large, flightless birds known as moa. For their analysis, the researchers genotyped hundreds of moa belonging to four species using remains stretching back almost 13,000 years in some cases.

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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.