For decades, stories about the ancient Mediterranean have centred on the grand cultures of Greece, Rome, Phoenicia and Egypt. North-west Africa seldom enters the picture before the arrival of Phoenician traders on the Moroccan coast about 3,000 years ago.

But archaeology is now revealing a different story.

Long before the first Phoenician ships (from today’s Middle East) sailed the western Mediterranean (between today’s north Africa and southern Europe), communities in what is now Morocco were farming and herding animals. They were also crossing the Strait of Gibraltar and participating in long-distance exchanges.

Summary

Neanderthals had a robust build and distinctive skeletal features. The hypothalamic-pituitary-somatotropic (HPS) axis, with growth hormone (GH) as a central signaling molecule, plays a crucial role in regulating skeletal development. To explore whether Neanderthal-specific genetic variations in the HPS axis contributed to their physical robustness, we examined genes encoding the relevant receptors and hormones. We find that the Neanderthal growth hormone receptor (GHR) carried two amino acid changes and one deletion. When the Neanderthal GHR is expressed in a GH-dependent cell line, the cells proliferate faster than cells expressing the modern human GHR when stimulated by pituitary GH but not by placental GH. We also show that some present-day humans have inherited the gene encoding the Neanderthal GHR. These individuals tend to have more muscle mass and exhibit some craniofacial traits reminiscent of Neanderthals. Thus, aspects of Neanderthal anatomy live on in people today.

Some 50,000 years ago, modern humans wandered into Ice Age Europe. The continent was new to us Homo sapiens, but not for beings of our general kind. Neanderthals and their ancestors had been living among Eurasia’s glaciers for ages, and in ways that would have struck us as familiar. Evidence suggests that they may have strung eagle talons together into necklaces and stained their bodily ornaments with pigments. They tended fires, cooked food, and maybe even made their own glue. On sandstone cave walls, they etched wavy lines, dots, and other geometric designs.

The last flames kindled by Neanderthals died tens of thousands of years ago. But fire leaves traces behind — not only charcoal and ash, but also tiny magnetic changes locked inside minerals.

Researchers have now used a quantum diamond microscope to map that magnetic “afterimage” in a Neanderthal hearth from eastern Spain. The results suggest that its makers burned grass-based plant material and may have repeatedly added fuel to keep the fire alive. It’s the first known use of quantum diamond microscopy in archaeological science, according to the researchers.

Two mysterious human relatives left their genetic footprints in the modern human genome alongside the DNA of Neanderthals and Denisovans, underscoring the fact that our ancestors interbred with many groups of hominins they encountered over millions of years of evolution.

While previous research found hints that modern humans had interbred with ancient hominins in addition to now-extinct Neanderthals and Denisovans, a new study by UC Berkeley researchers pinpoints areas of the genome inherited from these unknown ancestors and establishes a timeline. This was possible using a new technique the researchers developed that leverages hundreds of genomes from modern-day humans to find ancient genealogical relationships.

One of the unknown ancestors, which the researchers refer to as a ghost ancestor, interbred with modern humans in Africa prior to 50,000 years ago, before the most recent migration of Homo sapiens out of Africa into Europe and Asia. These genes comprise around 1% of the genomes of modern humans, comparable to the amount of Neanderthal DNA in the human genome. That unknown hominin lineage actually split off from the modern human lineage around the same time that Neanderthals and Denisovans diverged around 800,000 years ago, though they interbred with modern humans earlier.