Bertha Lutz was a pioneer Brazilian researcher who identified new species of amphibians. Her book on Brazilian tree frogs became a classic in the field. She was also well known for standing up for women's rights.

Credits
Producer: Casa de Oswaldo Cruz/Fiocruz
Sponsors: Prefeitura do Rio de Janeiro/Secretaria Municipal de Cultura; Dominus, Cofix; Calper
Created by: Glauber Gonçalves, Heverton Oliveira, Luísa Massarani e Rodrigo Ferrari
Consultants: Magali Romero Sá – Fiocruz
Cultural management: SPCOC – Sociedade de Promoção da Casa de Oswaldo Cruz
Musical direction: Marcos Souza
Original score: Marcos Souza
Voice: Josh Cashill
Production: Campo4
Translation: Daiane Grosklaus Whitty