What happens when two monkeys are paid unequally? Fairness, reciprocity, empathy, cooperation -- caring about the well-being of others seems like a very human trait. But Frans de Waal shares some surprising videos of behavioral tests, on primates and other mammals, that show how many of these moral traits all of us share.

In this fascinating look at the "alpha male," primatologist Frans de Waal explores the privileges and costs of power while drawing surprising parallels between how humans and primates choose their leaders. His research reveals some of the unexpected capacities of alpha males -- generosity, empathy, even peacekeeping -- and sheds light on the pow...

Fairness matters ... to both people and primates. Sharing priceless footage of capuchin monkeys responding to perceived injustice, primatologist Sarah Brosnan explores why humans and monkeys evolved to care about equality -- and emphasizes the connection between a healthy, cooperative society and everyone getting their fair share.

At TED in 1998, Brenda Laurel asks: Why are all the top-selling videogames aimed at little boys? She spent two years researching the world of girls (and shares amazing interviews and photos) to create a game that girls would love.