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A New Relative?

The 'Dragon Man' could be a representative from a line of ancient hominins that is more closely related to humans than Neanderthals, the Guardian reports.

A skull belonging to a 140,000-year-old hominin was first discovered in 1933, but hidden away until 2018, the New York Times adds. New analyses appearing in the journal The Innovation suggest that the 'Dragon Man' – named for its discovery near the Dragon River – had a large cranium about the size of modern humans' as well as larger eye sockets, a wider mouth, and larger teeth, and indicate it is more closely related to modern humans than Neanderthals. Based on this, the researchers led by Qiang Ji, a professor of paleontology of Hebei GEO University, suggest that the Dragon Man is a new species of ancient hominin, Homo longi.

But not everyone is convinced this is a new species, The Scientist notes, adding that there is even disagreement among the papers' authors. Chris Stringer from the Natural History Museum in London and an author on the papers, tells the Guardian that the sample is also closely related to Homo daliensis and may instead be another member of that lineage, while others say it could even be Denisovan.

The Times adds that further genetic analysis could give further insight into the mystery. Whatever the result, Stringer tells it that "[i]t's going to be a more complicated plot."

The Scan

Interfering With Invasive Mussels

The Chicago Tribune reports that researchers are studying whether RNA interference- or CRISPR-based approaches can combat invasive freshwater mussels.

Participation Analysis

A new study finds that women tend to participate less at scientific meetings but that some changes can lead to increased involvement, the Guardian reports.

Right Whales' Decline

A research study plans to use genetic analysis to gain insight into population decline among North American right whales, according to CBC.

Science Papers Tie Rare Mutations to Short Stature, Immunodeficiency; Present Single-Cell Transcriptomics Map

In Science this week: pair of mutations in one gene uncovered in brothers with short stature and immunodeficiency, and more.