View of a "plastic rock" at a laboratory of the University of Parana in Curitiba, Parana state, Brazil on March 22, 2023. - There are few places on Earth as isolated as Trindade island, a volcanic outcrop a three- to four-day boat trip off the coast of Brazil.So geologist Fernanda Avelar Santos was startled to find an unsettling sign of human impact on the otherwise untouched landscape: rocks formed from the glut of plastic pollution floating in the ocean. (Photo by Rodrigo FONSECA / AFP)