Chinese researchers have developed a biodegradable foam that is capable of removing 99.8 percent of microplastics from water. Small plastic particles in water have become one of the most concerning consumer pollutants due to their pervasive presence in water sources. According to the researchers, the material's adsorptive capacity remains basically unaffected by inorganic particles, heavy metals, organic pollutants and microorganisms in water. It is also fully biodegradable, ensuring it will not cause secondary pollution.