This Week in PNAS

Scientists at the RIKEN Center for Developmental Biology have used metabolomics to measure internal body time. Performing blood metabolome analysis on mice, they were able to measure hundreds of clock-controlled metabolites in mouse plasma; using the scan, they found body time under various conditions, which included differences in genetic background, sex, age, and feeding patterns.

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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.

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

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

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