Plastic rocks terrorize remote Brazilian island.

Plastic debris has become intertwined with rocks on Brazil's Trindade Island, a remote turtle refuge, which researchers say is evidence of humans' growing influence over the earth's geological cycles. The discovery of rocks made from plastic debris, called "plastiglomerates," has sparked alarm among scientists. The pollution mainly comes from fishing nets, which is very common debris on Trinidade Island's beaches. The discovery stirs questions about humans' legacy on the earth and the impact of plastic pollution on the planet's geology and ecosystems.