Partners have chosen a challenge-based learning approach that uses Web-Quests to build knowledge and understanding of climate change .A Web-Quest is an Internet research methodology focused on the educational process that stimulates research and critical thinking. It is an extremely simple and rich model for dimensioning educational uses of the Web, based on cooperative and investigative learning processes in the construction of knowledge. Web-Quests involve young people and their youth leaders in an Internet use focused on the educational process in a team-based environment; stimulating research and building research skills; enabling material production and critical thinking.