Brain evolution as a result of interaction in social groups

Nowadays people forget the importance of help each other when in the past was so essential to the development of the brain according to the research led by Roger M. Whitaker and his colleagues. The research is about a "donation game" and how we act depending on different factors. When we choose two individuals among two different populations the behaviour of each population are not the same one.

A map of human wanderlust

Genetic studies of individuals from geographically diverse human populations help to clarify the dispersal of modern humans from Africa to every corner of the Earth.

From our evolutionary birthplace in Africa, modern humans have migrated to nearly every habitable corner of Earth, from the inhospitable frozen wastelands of Siberia to the muggy African plains.

The number, timing and routes of human dispersals out of Africa have implications for understanding our past and how the past influenced contemporary patterns of human genomic variation.

Three studies online in Nature (Malaspinas et al., Mallick et al. and Pgani et al.) have described 787 new, high-quality genomes of individuals from more tan 270 populations across the globe, providing apportunities to refine and extend current models of historical human migration. Mallick et al. and Pgani et al. made great efforts in cataloguing genetic data from under-studied indigenous populations, which are often difficult to access and are rapidly disappearing. These include African populations, which have considerable genetic, linguistic and cultural diversity. Similarly, Malaspinas et al. describe the first extensive survey of human genetic diversity in the poorly studied Australia.

The phenotypic legacy mixture between archaic hominins and modern humans

Interbreeding between modern humans and archaic hominins is not a legend is a fact! And this have serious consequences in our genome which are exposured nowadays.

Many researchs affirm modern humans interbreeding with archaic hominins, known as Neanderthals. In this new investigation published in Science Journals and led by Corinne N. Simonti, they found out some DNA related to those hominins in Western and  Nothern people and thus hypothesize that some Neandertal's alleles mixed with modern humans . That is because when some groups of anatomical modern humans left Africa and began to spread across Europe and Asia they met each other and some of this groups were related with them in the same time and area. Furthermore, a recent genomic analysis provide not only neandertals and modern humans,