DNA

We are probably all familiar with the AncestryDNA advertisement for its genetic testing service in which a man states that he and his family had...

Historians have debated for centuries the magnitude, nature, and impact of population movements from the borders of the Roman Empire into its heart between the fourth and seventh centuries. In recent years, geneticists have begun to attempt to...

Few historical questions have so fascinated historians as the fall of the Roman Empire or, in the more fashionable modern parlance, its “transformation” into something altogether different, namely independent kingdoms ruled by successors of...

All of us who have watched as a friend or relative has disappeared into the fog of Alzheimer’s arrive at the same truth. Although we recognize people by their visual appearance, what we really are as individual humans is determined by how our...

Historians today can hardly answer the question: when does history begin? Traditional boundaries between history, protohistory, and prehistory have been blurred if not completely erased by the rise of concepts such as “Big History” and “...

Autism is a common child­hood neurodevelop­mental disorder affecting one in 180 children. It is characterized by impaired social interaction and communication, and by restric­ted interests and rep­etitive behav­ior. Autism is a complex disease...