Our species devotes a singular amount of time to an utterly unserious aspect of life: play. This begs the question: what is the adaptive value of horsing around? What possible evolutionary benefit could an activity that sees no specific return possibly have that we devote...

I remember the first time I observed my daughter pointing. We were at a neighborhood playgroup, a daily gathering of toddlers and their parents, and 12-month-old Tessa pointed at a painting of a koala on the wall. I marveled at her, almost yipping with joy....

It’s surprising that human infants as young as 10 months may be able to identify social rank. Research suggests that infants learn to distinguish who around them is dominant, using relative body size as a cue. ...

Traditional societies usually had restrictions to prevent self-support land from being alienated outside of the family or clan. By holding that the essence of private property is its ability to be sold or forfeited irreversibly, Roman law removed the archaic checks to foreclosure that prevented...

While the circumstances that led to the emergence of anatomically modern humans (AMH) remain a topic of debate, the species-centric idea that modern humans inevitably came to dominate the world because they were culturally and behaviorally superior to other hominins is still largely accepted. The...

The papacy’s role as organizer of the Crusades empowered it to ask for—indeed, to demand—tithes from churches and royal tax assessments from realms ruled by the warlord dynasties it had installed and protected. England’s nobility and clergy pressed for parliamentary reform to block King John...

Political polarization—the inability of groups such as political parties, religious sects, and cultural identity groups to cooperate even in basic, essential matters—has been a worry and a threat since American democracy began, and for many centuries before. James Madison called it “faction,” and in The...

Flush with my newly minted university degree, I sat down for breakfast with my entrepreneurial grandfather who met me with the question, “So you want to study to be an archaeologist, go to graduate school, how do you plan to make a living, dig for...

When interest-bearing commercial and agrarian debt came to be incorporated into civilization’s economic structure in the third millennium BC, it was accompanied by clean slates that liberated bondservants and restored to debtors the rights to the crops and land that creditors had taken. By the...

The motives that drove archaeologists of the past included a thirst for glory, a taste for treasure, and a desire to enshrine a new political era with the legitimacy of the ancient past. ...