This article contains compelling and inspiring stories of agroecology as a science, a practice and a movement in Latin America, Colombia.  In 2004, five agronomy students in Fusagasugá, two hours south of the Colombian capital, Bogotá, set out to create a peasant and environmental movement, to protect the land and strengthen local economies and food sovereignty. They founded the organisation Tierra Libre, which has become a successful model for Colombian and Latin American agroecology. The success of Tierra Libre is unique in Colombia. It seeks to improve the relationship with food production through agroecological techniques, but it has also set up peasant associations and projects that strengthen the rural-urban relationship and encouraged young leaders who are crucial for the survival of the peasantry in the country.