Archive: 01/21/2011

Could oysters be used to clean up Chesapeake Bay?

Chronic water quality problems caused by agricultural and urban runoff, municipal wastewater, and atmospheric deposition from the burning of fossil fuels leads to oxygen depletion, loss of biodiversity, and harmful algal ...

Jan 21, 2011
3.8 / 5 (4) 0

Microtechnology: An alignment assignment

Microelectromechanical systems (MEMS), which consist of tiny moving parts driven by electrical signals, have found ready applications in optical communication systems. They are attractive in part because they ...

Jan 21, 2011
4 / 5 (2) 0

Marine 'dead zones' tracked by new web-based map

New research by the World Resources Institute (WRI) and the Virginia Institute of Marine Science, College of William and Mary, identifies more than 530 low-oxygen "dead zones" and an additional 228 sites worldwide ...

Jan 21, 2011
4.5 / 5 (2) 0

How to tame hammering droplets

People living in older buildings often hear pounding noises in their plumbing or radiator pipes — it’s a well-known effect called a water hammer, which can occur when a valve is suddenly opened or ...

Jan 21, 2011
4.8 / 5 (4) 0 | with audio podcast

Blood test predicts cognitive decline

(PhysOrg.com) -- Low blood levels of beta-amyloid 42, a protein-like substance, were associated with the risk of significant cognitive decline within nine years in a group of elders, in a study led by Kristine Yaffe, MD, ...

Jan 21, 2011
4 / 5 (1) 0

Tired drivers as bad as drunk drivers

(PhysOrg.com) -- New research shows that driving for only three hours at night has a similar effect to driving under the influence of alcohol, and even two hours can be equivalent to a couple of drinks.

Jan 21, 2011 report
4.4 / 5 (9) 9 | with audio podcast