Five decades of ecological conscience por Carlos Eduardo Lins da Silva
Extinct rivers of the Northeast por Carlos Fioravanti
Lack of maintenance and design flaws prevented the flood containment system from protecting Porto Alegre por Meghie Rodrigues
The past dangers of receiving blood por Felipe Floresti
Glass negatives depict science in the early twentieth century por Carlos Fioravanti
Revolt against the weighing scale por Suzel Tunes