What causes air pollution?

By definition, pollution refers to any matter that is "out of place". In other words, it is what happens when toxins, contaminants, and other harmful products are introduced into an environment, disrupting its normal patterns ...

Comet ATLAS may put on quite a show

A comet called Atlas is currently heading toward the sun, and it just might put on a really good show in a couple of months. Discovered last December by the Asteroid Terrestrial-impact Last Alert system in Hawaii (thus the ...

Pilot whale meat poses health hazard, Faroese warned

The Faroe Islands' ritual pilot whale hunt is not only highly controversial, eating the whale meat also poses a health hazard, public health authorities in Denmark's autonomous North Atlantic territory warn, advising against ...

Grasslands more reliable carbon sink than trees

Forests have long served as a critical carbon sink, consuming about a quarter of the carbon dioxide pollution produced by humans worldwide. But decades of fire suppression, warming temperatures and drought have increased ...

Diesel is now better than gas, study says

Modern diesel cars emit less pollution generally than cars that run on gasoline, says a new six-nation study published today in Scientific Reports whose groundwork was laid in part by an American chemist now working at Université ...

Milky Way now hidden from one-third of humanity

The Milky Way, the brilliant river of stars that has dominated the night sky and human imaginations since time immemorial, is but a faded memory to one third of humanity and 80 percent of Americans, according to a new global ...

Study finds pollution is deadlier than war, disaster, hunger

Environmental pollution—from filthy air to contaminated water—is killing more people every year than all war and violence in the world. More than smoking, hunger or natural disasters. More than AIDS, tuberculosis and ...

Noise created by humans is pervasive in US protected areas

Protected areas in the United States, representing 14 percent of the land mass, provide places for respite, recreation, and natural resource conservation. However, noise pollution poses novel threats to these protected areas, ...

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Pollution

Pollution 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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