I saw this in the gnxp.com comment section:


Orkney was a major cultural center during the Neolithic, 3800–2500 BC. Farming flourished, permanent stone settlements and chambered tombs were constructed, and long-range contacts were sustained. From ~3200 BC, the number, density and extravagance of settlements increased and new ceremonial monuments and ceramic styles, possibly originating in Orkney, spread across Britain and Ireland. By ~2800 BC this phenomenon was waning, although Neolithic traditions persisted to at least 2500 BC. Unlike elsewhere in Britain, there is little material evidence to suggest a Beaker presence, suggesting that Orkney may have developed along an insular trajectory during the second millennium BC. We tested this by comparing new genomic evidence from 22 Bronze Age and three Iron Age burials in northwest Orkney with Neolithic burials from across the archipelago. We identified signals of inward migration on a scale unsuspected from the archaeological record: as elsewhere in Bronze Age Britain, much of the population displayed significant genome-wide ancestry deriving ultimately from the Pontic-Caspian Steppe. However, uniquely in northern and central Europe, most of the male lineages were inherited from the local Neolithic. This suggests that some male descendants of Neolithic Orkney may have remained distinct well into the Bronze Age, although there are signs that this had dwindled by the Iron Age. Furthermore, although the majority of mtDNA lineages evidently arrived afresh with the Bronze Age, we also find the first evidence for continuity in the female line of descent from Mesolithic Britain into the Bronze Age, and even to the present day.
Too bad the files are not in FTP BAM format.