Javier is an environmental lawyer working on issues in environmental law, climate change, and the environmental rights of Nature defenders. An expert on the Rights of Nature, he supports legal cases through the formulation of amicus curiae briefs and provides specialized advice for litigation to Latin American organizations and groups. He contributes to the drafting of ecocentric legislation for ELC's Latin America Legal Program. Javier is also a member of the IUCN Commission on Environmental Law. In the academic field, he has conducted courses on the Rights of Nature, non-human animal rights, and access to environmental justice at the Universidad Nacional Autónoma de México (UNAM), Friedrich-Ebert-Stiftung, and elsewhere. Javier leads ELC’s work on implementing the Escazú Agreement by participating in the negotiations of the Escazú Agreement Conferences of the Parties.