Pollution
hidePollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms . Pollution can take the form of chemical substances, or energy, such as noise, heat, or light energy. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring; when naturally occurring, they are considered contaminants when they exceed natural levels. Pollution is often classed as point source or nonpoint source pollution. The Blacksmith Institute issues annually a list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.
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News tagged with pollution
Forests could flip from sink to source of CO2: study
Apr 17, 2009 |
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Forests that today soak up a quarter of carbon pollution spewed into the atmosphere could soon become a net source of CO2 if Earth's surface warms by another two degrees Celsius (3.6 degrees Fahrenheit), cautions ...
Obama to unveil dramatic new auto emissions standards
May 19, 2009 |
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A new front in the battle against climate change will open Tuesday, when President Barack Obama unveils sweeping new auto regulations described as equivalent to taking 177 million cars off the road.
We have a 'right to starlight,' astronomers say
Aug 15, 2009 |
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The public's "right to starlight" is steadily being eroded by urban illumination that is the bane of astronomers everywhere, the International Astronomical Union said on Friday.
Warming world in range of dangerous consequences
Space & Earth / Earth Sciences
Sep 17, 2008 |
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The earth will warm about 2.4° C (4.3° F) above pre-industrial levels even under extremely conservative greenhouse-gas emission scenarios and under the assumption that efforts to clean up particulate pollution ...
Are Magnetically Levitating 'Sky Pods' the Future of Travel?
Sep 23, 2009 |
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(PhysOrg.com) -- As a society, we are increasingly interested in finding new ways of transportation that are cleaner for the environment. New concepts in mass transit seem to be one of the main ways to move ...
World's largest telescope to be built in Hawaii
Jul 22, 2009 |
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(AP) -- Hawaii was chosen Tuesday as the site for the world's biggest telescope, a device so powerful that it will allow scientists to see some 13 billion light years away and get a glimpse into the early ...
Helium Balloon in Paris Displays Air Pollution Levels
Jul 09, 2008 |
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People in Paris won't have to look far to see the city's air pollution levels. A giant tethered helium balloon will display real-time reports of atmospheric pollution using an innovative lighting system, which ...
Clean fuels could reduce deaths from ship smokestacks by 40,000 annually
Jul 08, 2009 |
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Rising levels of smokestack emissions from oceangoing ships will cause an estimated 87,000 deaths worldwide each year by 2012 -- almost one-third higher than previously believed, according to the second major ...
New Pollution Monitoring: Our Air is Dirtier Than We Thought
Apr 14, 2009 |
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(PhysOrg.comOne of my pet peeves is the focus we have on global warming. While global climate change is important, it continues to provide a red herring of sorts, taking attention away the public health concern ...
Physicist makes new high-res panorama of Milky Way
Oct 28, 2009 |
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Cobbling together 3000 individual photographs, a physicist has made a new high-resolution panoramic image of the full night sky, with the Milky Way galaxy as its centerpiece. Axel Mellinger, a professor at ...
Researcher uses bacteria to make radioactive metals inert
Sep 08, 2009 |
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The Lost Orphan Mine below the Grand Canyon hasn't produced uranium since the 1960s, but radioactive residue still contaminates the area. Cleaning the region takes an expensive process that is only done in ...
New climate targets may not change daily life much
Nov 27, 2009 |
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(AP) -- Americans' day-to-day lives won't change noticeably if President Barack Obama achieves his newly announced goal of slashing carbon dioxide pollution by one-sixth in the next decade, experts say.
Trapped! Scientists Immobilize Bacteria in Fibrous Hydrogel
Aug 04, 2009 |
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(PhysOrg.com) -- Bacteria play a role in myriad industrial processes from fermentation to cleaning up environmental pollution. But floating freely in solution, the microbial cells constantly multiply, generating ...
Scientists ready to set sail for 'Great Pacific Garbage Patch,' in name of research
Aug 04, 2009 |
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Hoping to learn more about one of the most glaring examples of waste and environmental pollution on Earth, a group of scientists will set sail from San Francisco Tuesday to the "Great Pacific Garbage Patch," a massive vortex ...
The first evidence of pre-industrial mercury pollution in the Andes
May 18, 2009 |
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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.
