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
Tadpoles Used to Rapidly Detect Water Pollution
Dec 03, 2009 |
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(PhysOrg.com) -- Research conducted by University of Wyoming Professor Paul Johnson and others demonstrates that genetically modified tadpoles work well as sensitive monitors for rapidly detecting water pollution.
Elevated CO2 levels may mitigate losses of biodiversity from nitrogen pollution
Dec 03, 2009 |
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Rising levels of carbon dioxide may overheat the planet and cause other environmental problems, but fears that rising CO2 levels could directly reduce plant biodiversity can be allayed, according to a new study by a University ...
Australia's Parliament defeats global warming bill
Dec 02, 2009 |
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(AP) -- Australia's plans for an emissions trading system to combat global warming were scuttled Wednesday in Parliament, handing a defeat to a government that had hoped to set an example at international climate change ...
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Californians -- and their cell phones -- will help computer scientists monitor air pollution
Technology / Computer Sciences
Dec 04, 2009 |
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You want to go for a run, but you don't want to run in polluted air that might aggravate your asthma. University of California, San Diego computer scientists are creating a network of environmental sensors ...
Scientists demonstrate multibeam, multi-functional lasers
Nov 30, 2009 |
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An international team of applied scientists from Harvard, Hamamatsu Photonics, and ETH Zürich have demonstrated compact, multibeam, and multi-wavelength lasers emitting in the invisible part of the light spectrum ...
CO2 levels rising in troposphere over rural areas
Space & Earth / Earth Sciences
Dec 03, 2009 |
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Spanish researchers have measured CO2 levels for the past three years in the troposphere (lower atmosphere) over a sparsely inhabited rural area near Valladolid. The results, which are the first of their kind ...
Tahoe faces new development battle: green vs. green
Dec 03, 2009 |
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As snow begins to blanket Lake Tahoe, the region finds itself facing a new kind of development battle: green vs. green.
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