Scientists have discovered a shocking new form of pollution on Brazil's Trindade Island: "plastiglomerates", rocks made from plastic debris. Fernanda Avelar Santos and her team ran chemical tests to find out what kind of plastics are in the rocks, and the results showed a mixture of sedimentary granules and other debris held together. This discovery is a sign of the increasing amount of plastic pollution in the environment, and the researchers are now working to understand the implications and look into ways to reduce plastic pollution.