Group items tagged

Scientific American, 7/17/09, article by Larry Greenemeier. Most people assume that their trash ends up in a landfill somewhere far away (if they think about this at all). But growing concern over the environmental impact of waste-discarded electronics, in particular-has prompted a team of researchers at the Massachusetts Institute of Technology (MIT) to take a high-tech approach to studying exactly what people are tossing out and where those items are ending up. The researchers, part of MIT's Senseable City Lab, have developed electronic tags that they're hoping as many as 3,000 volunteers in Seattle and New York City will affix to different items they throw away this summer as part of the Trash Track program. These tags will contact cell phone towers they pass as they flow through the trash stream to their final destinations, helping the researchers monitor the patterns and costs of urban disposal.

Millions of printed circuit boards from discarded electronics are tossed into landfills every year. In addition to the volume of waste, the material can leach chemicals into the soil. As an alternative, researchers at Shanghai Jiao Tong University in China are finding various ways to reuse the panels, including as an additive in asphalt.

University of China is using ground-up circuit boards to strengthen cement