This Week in PNAS

In a study appearing in the early, online edition of the Proceedings of the National Academy of Sciences, a Max Planck Institute for Evolutionary Anthropology-led team describe an improved ancient DNA extraction method used to help sequence the mitochondrial genome from a more than 300,000-year-old cave bear bone found in a permafrost-free cave in Spain.

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Researchers have sequenced the northern white rhinoceros to gauge whether it could be brought back from the edge of extinction, the New York Times reports.

Tufts University researchers found a role for miRNA in transmitting stress between generations, the Economist reports.

Bavaria expands its forensic genetic analyses to include DNA phenotyping, raising discrimination concerns.

In Science this week: gut microbiome influences liver cancer growth, spread; and more.