Two independent research groups this month published data indicating that plant microRNAs are not taken up into animals when ingested in concentrations sufficient to regulate gene expression, contrary to a highly publicized report from last year.

While additional work in larger animal populations is required to bear out the latest findings, they suggest that some technical artifact or contamination issue may have been behind the original study, according to Kenneth Witwer, a Johns Hopkins School of Medicine researcher and lead author of one of the new papers.

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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.

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