From Guy Inchbald, Upton on Severn, Worcestershire, UK
You say that “before humans arrived, Neanderthals lived in Europe for hundreds of thousands of years (16 May, p 14). When the two met, they interbred.” I beg to differ. Humans interbreeding with non-humans surely makes no biological sense whatsoever. I am forced to conclude that Neanderthals were human and that humans were therefore already there when Homo sapiens sapiens arrived.
The editor writes:
Such confusions underline ongoing debates on how to define species (26 January 2019, p 36)
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