TechnologyMicrorobots made from pollen help remove toxic mercury from wastewater Pollen has a natural tendency to adsorb mercury and forms the basis of a new class of tiny robots that speed through toxic water to purify it ¿ìè¶ÌÊÓÆµ
EnvironmentChina has made huge strides cleaning up its polluted rivers Pollutants in Chinese rivers fell by 63 per cent over 15 years, and oxygen in the water increased – which suggests strict regulations are working ¿ìè¶ÌÊÓÆµ