Can somebody explain me?
The Wikipedia says:
Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem, physical systems or living organism. Pollution can take the form of chemical substances or energy, such as noise, heat, or light. 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.
Well, what exactly is pollution? Something gross? Stinky? Poison? Yes, yes, all those things... and more. Some is obvious like smoke, which you can see, but much of it is not obvious at all. Yet you're eating it, drinking it, and breathing it most of the time. In addition, what is worse is that all this muck affects all other life on Earth. Not only humans, also animals and plants. You can find pollution made by people just about everywhere on the planet.
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.
Therefore, there's nowhere on the planet left with no pollution; not even the bottom of the sea or high up in the air. And this is a very bad news.
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