Cuban-Brazilian chemist Johan Gonzalez, pictured in his lab in Brazil, was chosen to present his renewable energy research at a prestigious American Chemical Society conference, but he can't get a visa to visit the U.S.
Cuban-Brazilian chemist Johan Gonzalez, pictured in his lab in Brazil, was chosen to present his renewable energy research at a prestigious American Chemical Society conference, but he can't get a visa to visit the U.S. Courtesy/Johan Gonzalez
Cuban-Brazilian chemist Johan Gonzalez, pictured in his lab in Brazil, was chosen to present his renewable energy research at a prestigious American Chemical Society conference, but he can't get a visa to visit the U.S. Courtesy/Johan Gonzalez