May 28, 2016

When Kristen Hawkes first started to research the foraging habits of the Hadza hunter-gatherers, she noticed that the older women in the society were spending their time collecting food and sharing it with their grandchildren. She started to wonder if this type of contribution from grandmothers might explain why humans...

May 18, 2016

Laughter is a universal human behavior. Have you ever wondered why we laugh or what it really means when we do? Greg Bryant of UCLA studies the evolution of communication and vocal behavior, especially of spontaneous vocal expressions such as laughter. In this episode of Origin Stories he explores the origins...