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Older dental fillings contain form of mercury unlikely to be toxic

Older dental fillings contain form of mercury unlikely to be toxic

Chemistry / Biochemistry

created Dec 09, 2009 | popularity not rated yet | comments 0

A new study on the surface chemistry of silver-colored, mercury-based dental fillings suggests that the surface forms of mercury may be less toxic than previously thought. It appears online in ACS' journal ...


MESSENGER at Mercury

MESSENGER Spacecraft Flies by Mercury

Space & Earth / Space Exploration

created Sep 30, 2009 | popularity 4.7 / 5 (3) | comments 0

Shortly before 5:55 p.m. EDT, MESSENGER skimmed 228 kilometers (141 miles) above the surface of Mercury in its third and final flyby of the planet.


The first evidence of pre-industrial mercury pollution in the Andes

Space & Earth / Environment

created May 18, 2009 | popularity 4.4 / 5 (9) | comments 2

The study of ancient lake sediment from high altitude lakes in the Andes has revealed for the first time that mercury pollution occurred long before the start of the Industrial Revolution.


Brookhaven Lab Patents New Method for Mercury Remediation

Brookhaven Lab Patents New Method for Mercury Remediation

Chemistry / Other

created Sep 15, 2009 | popularity 4 / 5 (1) | comments 0

Scientists at the U.S. Department of Energy's Brookhaven National Laboratory have patented a new method to remove toxic mercury from soil, sediment, sludge and other industrial waste. As described in recently ...


Free online activity explains MESSENGER spacecraft's Mercury flyby on Sept. 29

Free online activity explains MESSENGER spacecraft's Mercury flyby on Sept. 29

Space & Earth / Space Exploration

created Sep 21, 2009 | popularity 3 / 5 (3) | comments 1

(PhysOrg.com) -- NASA's MESSENGER spacecraft will fly past the planet Mercury on Sept. 29, and a free online simulator created by staff at Montana State University's Burns Technology Center helps explain how ...


EPA to limit mercury from cement plants

Space & Earth / Environment

created Apr 22, 2009 | popularity 5 / 5 (1) | comments 0

The Environmental Protection Agency on Tuesday called for the nation's first limits on mercury emissions from the more than 100 cement factories across the U.S.


How mercury becomes toxic in the environment

How Mercury Becomes Toxic In The Environment

Space & Earth / Environment

created Aug 18, 2009 | popularity 3.8 / 5 (8) | comments 8

(PhysOrg.com) -- Naturally occurring organic matter in water and sediment appears to play a key role in helping microbes convert tiny particles of mercury in the environment into a form that is dangerous to ...


Worried about mercury? It's easy to choose safer fish

Medicine & Health / Health

created Jun 26, 2009 | popularity 5 / 5 (1) | comments 1

We've been told seafood is good for us because it's low in calories and fat, full of protein and packed with Omega-3s, which may protect against coronary heart disease and stroke, and are thought to help neurological development ...


Study reveals how Arctic food webs affect mercury in polar bears

Space & Earth / Environment

created Dec 08, 2009 | popularity 3 / 5 (2) | comments 0

With growing concerns about the effects of global warming on polar bears, it's increasingly important to understand how other environmental threats, such as mercury pollution, are affecting these magnificent Arctic animals.


MESSENGER discovers an unusual impact basin on Mercury

Space & Earth / Space Exploration

created Apr 30, 2009 | popularity 4.8 / 5 (4) | comments 0

A previously unknown, large impact basin has been discovered by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft during its second flyby of Mercury in October 2008. The impact basin, ...


Google to add maps of local findings to search results

Technology / Internet

created Apr 08, 2009 | popularity not rated yet | comments 0

Google has confirmed that it is going to start adding a map of local findings to search results for things like "pizza," "burger" and "dentist," something that Google watchers have been buzzing about for months.


Glass Thermometers Still a Safety Hazard

Medicine & Health / Health

created Nov 03, 2009 | popularity 4 / 5 (1) | comments 1

(PhysOrg.com) -- A study by emergency physicians at Children's Hospital Boston provides a wakeup call to parents to get rid of their old glass thermometers. A 12year review of patients seen in Children's emergency department ...


Open Lid Reveals Mercury

Chemistry / Analytical Chemistry

created Oct 15, 2009 | popularity 4.4 / 5 (8) | comments 1

(PhysOrg.com) -- Mercury, the silvery liquid formerly used in thermometers, is now known to be highly toxic. The worst of the toxins are organic mercury compounds, such as methylmercury. Most previous analytical procedures ...


EPA fellow studies effect of mercury in toads

EPA fellow studies effect of mercury in toads

Biology / Ecology

created Oct 19, 2009 | popularity not rated yet | comments 0

Christine Bergeron of Old Orchard Beach, Maine, a doctoral student in Virginia Tech's College of Natural Resources, received a fellowship from the Environmental Protection Agency's (EPA) National Center for ...


FCC chair touts broadband as top priority

Technology / Telecom

created Aug 04, 2009 | popularity not rated yet | comments 0

The Federal Communications Commission's top "strategic" priority will be to encourage greater availability and adoption of broadband Internet access, the agency's new chairman, Julius Genachowski, said in a meeting Monday ...