Premio México 1994
Ignacio Rodríguez Iturbe

He is considered to be one of the world’s most renowned scientists in hydrology and environmental science. His contributions on the space-temporal structure of precipitation and the development of the theoretical bases fundamental for the design of meteorological nets for the recollection of rain precipitation data are outstanding.

Premio México 1993
José Leite Lopes

His most important contribution was predicting the vectorial existence of boson neutrons, together with charged bosons as vehicles of weak interaction, and the suggestion of the unification of electromagnetic forces with weak forces, with the postulate g=e. His vigorous participation in the creation of the Centro Brasileiro de Pesquisas Físicas (CBPF) was crucial for the development of basic and applied science in Brazil.He was born in Recife, Brazil, in 1918 and is widely recognized for his contributions to scientific development in Latin America, especially in nuclear physics and elemental particles.

Premio México 1992
Johanna Döbereiner

Her important contributions on the biological fixation of nitrogen opened the door to develop an important program to improve soy production, paving the road for Brazil to become the second world producer of this product.