Avicennia marina, otherwise known as grey mangrove trees, filter heavy metals out of the surrounding soil and water. A new study from Indonesia has found that their leaf litter accumulates the most copper, followed by leaves and then roots. Researchers from Universitas Diponegoro analysed copper concentrations in a mangrove forest in Tapak Tuguerjo, an area along the northern coast of Java, Indonesia. The forest is downstream ...