Crop fertilizers are a major source of pollution, as the chemicals make their way out of the soil and into the natural ...

Heavy metals in glass beads for highway markings must meet a limit of 200 ppm for arsenic, lead and antimony. Aug 18, 2011 American Association of State Highway and Transportation Officials ...

Researchers have developed glass fertiliser beads for controlled release, minimising environmental harm while sustaining ...

Agricultural fertilizers are critical for feeding the world's population, restoring soil fertility and sustaining crops. Excessive and inefficient use of those resources can present an environmental ...

Researchers have concluded that glass beads excavated from the tomb of a king in Fukuoka Prefecture were likely brought to Japan through the ancient Silk Road trade route network. A group of ...