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Trash or treasure? Discarded US computers often get a second life
September 02, 2009More computers discarded by consumers in the United States are getting a second life in developing countries than previously believed, according to a new study -- the most comprehensive ever done on the topic -- reported in ACS' semi-monthly journal Environmental Science & Technology. The findings may ease growing concerns about environmental pollution with toxic metals that can result from dismantling and recycling computer components in developing countries.
In the study Ramzy Kahhat and Eric Williams focused on the situation in Peru, where Kahhat was born. They used a Peruvian government database that tracks importation of new and used computers and computing equipment. The researchers found that at least 85 percent of computers imported into Peru are reused, rather than going directly into recycling.
The finding challenges the widespread belief that the trade in e-waste was mainly about dumping unusable junk or recycling components is inaccurate, at least for Peru. The U.S. is the source of up to 76 percent of used computers imported to Peru from 2003-2007, the researchers indicated. They note uncertainty on whether the same holds true for other, much larger countries like China and India.
DOWNLOAD FULL TEXT ARTICLE: http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/es8035835
American Chemical Society
DOWNLOAD FULL TEXT ARTICLE: http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/es8035835
American Chemical Society
Computer Current Events and Computer News RSSTime of day matters to thirsty trees, U of T researcher discovers
The time of day matters to forest trees dealing with drought, according to a new paper produced by a research team led by Professor Malcolm Campbell, University of Toronto Scarborough's vice-principal for research and colleagues in the department of cell and systems biology at the St. George campus.
Computational microscope peers into the working ribosome
Two new studies reveal in unprecedented detail how the ribosome interacts with other molecules to assemble new proteins and guide them toward their destination in biological cells.
New tool for helping pediatric heart surgery
A team of researchers at the University of California, San Diego and Stanford University has developed a way to simulate blood flow on the computer to optimize surgical designs.
More than powerful! German research computer QPACE is the most energy efficient in the world
At the 2009 Supercomputing Conference in Portland, Oregon (USA), the high-performance computer QPACE (QCD Parallel Computing on the Cell) was recognized today as the most energy-efficient supercomputer in the world.
Smartphone app illuminates power consumption
A new application for the Android smartphone shows users and software developers how much power their applications are consuming. PowerTutor was developed by doctoral students and professors at the University of Michigan.
Building the smart home wirelessly
Like the paperless office, the smart home has been a long time coming, but a report published in the International Journal of Internet Protocol Technology, suggests that radio tags coupled with mobile communications devices could soon provide seamless multimedia services to the home.
On the crest of wave energy
The ocean is a potentially vast source of electric power, yet as engineers test new technologies for capturing it, the devices are plagued by battering storms, limited efficiency, and the need to be tethered to the seafloor.
Engineer designs micro-endoscope to seek out early signs of cancer
Traditional endoscopes provide a peek inside patients' bodies. Now, a University of Florida engineering researcher is designing ones capable of a full inspection.
Technique finds gene regulatory sites without knowledge of regulators
A new statistical technique developed by researchers at the University of Illinois allows scientists to scan a genome for specific gene-regulatory regions without requiring prior knowledge of the relevant transcription factors.
UCSB physicists move 1 step closer to quantum computing
Physicists at UC Santa Barbara have made an important advance in electrically controlling quantum states of electrons, a step that could help in the development of quantum computing.
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