Jose VALLEJO, armed with a diploma in financial engineering from Ecuador, completed the DEA DESTIN (sustainable and integrated development) of the UVSQ in 2004. His dissertation, overseen by Mr Patrick Schembri, looks at the matter of ecological debt through the approach of the Kuznets environmental curve. On his return to Ecuador he taught economics and microeconomics at the Quito University of San Fransico and the Polyechnic University of Tulcan. Still in the ecological economics area, his thesis focuses on a case study in Ecuador in the Amazonian region. He is studying the YASUNI-ITT project which consists of leaving Ecuadorian petrol reserves in the ground in exchange for financial compensation by the international community.