Permanent challenge for a healthy environment. Rev Rene, Fortaleza, v. 17, n. 1, p. 1–2, 2016. DOI: 10.15253/2175-6783.2016000100001. Disponível em: https://periodicos.ufc.br/rene/article/view/2634. Acesso em: 7 fev. 2026.