This Week in Science

In this week's Science, scientists from the Salk Institute describe how mouse pups that receive less maternal care have more transposons in a certain part of the brain, suggesting that early life experience can influence somatic variation in the genome. In the study, the investigators focused on long interspersed nuclear element–1 (L1) retrotransposons, and found that pups receiving less maternal care exhibited noticeably more transposon replication in the hippocampus.

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An artificial intelligence-based analysis suggests a third group of ancient hominins likely interbred with human ancestors, according to Popular Mechanics.

In Science this week: reduction in bee phylogenetic diversity, and more.

The New York Times Magazine looks into paleogenomics and how it is revising what's know about human history, but also possibly ignoring lessons learned by archaeologists.

The Economist reports on Synthorx's efforts to use expanded DNA bases they generated to develop a new cancer drug.