Prieto received a Bachelor of Medicine from the
Javeriana University, a master's degree in Philosophy at the Javeriana University (2014), and a postgraduate degree in Human Rights at the
Open University of Catalonia. In 2013, he founded the Movimiento Ambientalista Colombiano, an environmental advocacy organization. He has been involved in environmental campaigns in regions such as
San Andrés,
Chocó,
La Guajira, and
Putumayo. Prieto has participated in various political forums and negotiations advocating for pro-environment policies: Insertion of Colombia in the
Escazú Agreement for
Latin America; Energy Transition Table; and proposals to President
Iván Duque after the social unrest of autumn 2019. In this case, Prieto expressed concern regarding the absence of pollution control policies and the need to sign the
Escazú Agreement. He teaches climate science at Pontificia Universidad Javeriana and conducts research with the
Colombian Geological Survey. During the
COVID-19 pandemic, Prieto broadcast several educational videos on the best ways to deal with the virus. Prieto is also active in science communication. He is the author of essays and articles, the blog and the internet video channel "El Planetario". He collaborated with the TV program
Muy Buenos Días for 11 years, has worked with the RCN Channel directed by
Jota Mario Valencia, and is currently the host of
Vida conciencia and of "Conversaciones en Casa" on
Canal Capital. == Selected academic publication ==