Ozone is a gas naturally present in the atmosphere, but in very low quantities. It is colorless and has a very strong odor that gave it its name (from Greek ozein, odor). About 90% of the atmospheric ozone is located in the stratosphere (region between an altitude of about 10 and 50 km) and comprises what one calls the ozone layer. It absorbs a large part of ultraviolent rays which are very dangerous in heavy doses, and thus protects life on Earth. (1) The protective ozone layer must not be confused with the ozone present at low altitude (in the troposphere) and linked to urban pollution. It is only loosely linked to stratospheric ozone. Gases due to pollution can not plug up the hole in the ozone layer. The hole in the ozone layer
10/05/2012
Europe writes off biggest environment satellite
08/03/2012
Emissions from Asia put US cities over the ozone limit
16/01/2012
China sets pace for smoggy Hong Kong: think-tank
UNEP
Multiple Benefits Include Improved Air Quality and Human Health, Higher Crop Yields, Reduced Rate of Climate Change in the...
It is possible to reach an agreement on the climate rapidly. The negotiations that led to the Montreal Protocol in 1987 showed this to be true. The aim of this protocol is to reduce and eventually eliminate...
In 2004 in Ethiopia, a women's education program was led by the Red Cross International Committee (Comité...
Ecological footprint
