As the festival goes on, we encounter a sixteen-year-old winner of the Best Tiple Player award while some twin singers offer some insight into their particularly well-coordinated voices.

Sub30 examines the goals and desires that parents have for their children as well as the fact that many Colombian men and women are choosing to wait longer to have children. Still, says one young Colombian couple, while one can never be fully prepared to have children, doing so opens the doors to many unexpected life possibilities.

As the festival continues, we meet a group of Colombians who talk about how they've modernized the themes of the Andean music they play. We also meet an Argentinian who shares about the types of songs she performs.

Sub30 examines the extent to which having children can help parents to understand their own parents and also introduces us to Ricardo and Eduardo, a homosexual couple living in Bogotá.

A young husband and wife from Colombia speak about how having children of their own has helped to put their relationships with their own parents into perspective despite differences in world view.

The captain of the Greenpeace ship, the Rainbow Warrior III, which is docked in Spain, explains to us a bit about the ship's equipment as well as his duties on board.

As Sub30 continues its examination of the diverse family dynamics in Colombia, a mother who always knew she wanted to have kids early shares her experience and some pros of having children young.

At Colombia's Mono Núñez music festival, native Colombians and foreigners alike share their deep love for traditional Colombian music.

Sub30 explores the manner in which having children may change some people's perspective on life.

Singing in Nasa Yuwe, their native language, is one way in which Colombia's indigenous Nasa population strives to preserve and make more visible their language, culture and customs.

Meet Yimmy, who grew up on the streets and in a children's home, and his daughter Karen Dayana, who almost met the same fate as her father. They make up one of the many types of families we see today.

Colombians at the Mono Núñez Festival in Cali talk about their objectives for attending it, among them the importance of preserving traditional Colombian rhythms in a period in which their mainstream popularity is waning.

The exploration of Colombian family dynamics continues as interracial couples share the stories of how they first met and fell in love.

See how students at the Rodríguez Casado de Palos de la Frontera Institute in Huelva, Spain learn to use the oil found at home to make biodiesel, an alternative car fuel.

Historians continue to discuss the subjective nature of recorded history and the fine line between fiction and fact.