News tagged with pollution

Air quality worsening in world's cities

Most city dwellers around the world are exposed to air pollution levels that are considered unsafe, and the situation is getting worse, according to a World Health Organization report Wednesday.

May 07, 2014
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Sharks contain more pollutants than polar bears

The polar bear is known for having alarmingly high concentrations of PCB and other pollutants. But researchers have discovered that Greenland sharks store even more of these contaminants in their bodies.

Apr 15, 2014
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