Antarctica today.

There are many issues concerned in Antarctica today. Two of them involves the whole world.
Many scientists are currently studying the ozone layer as well as the greenhouse effect.
The ozone layer is a layer of gas in the upper atmosphere of the earth. It blocks a lot of ultraviolet light that is harmful to the skin and could cause skin cancer. However the ozone layer over Antarctica is being destroyed. Scientists blame this destruction on Chlorofluorocarbons, or CFC's, used in aerosol sprays and in air conditioning systems. These CFC's can destroy the Ozone layer.
But why is the hole over Antarctica and not over any other parts of the world?
Over Antarctica, there is an isolated region in the atmosphere which moves in a circular motion called the polar vortex. Researchers believe that this causes a physical sink of gases in the stratosphere. So all the gases float downwards toward Antarctica thus creating a hole above Antarctica.
Another problem in Antarctica is the greenhouse effect.
The earth is slowly heating up.
The burning of fossil fuels causes air pollution to occur.
This pollution blocks heat from exiting the earth's atmosphere.
The heat is becoming trapped making the earth hotter and hotter over the years.
Even a slight change in the earth's temperature will result in disaster.
The reason is that the heat will eventually melt the huge ice caps in Antarctica and in the Arctic.
If enough ice melts the ocean level will rise and will flood many cities and lowland areas.
So many scientists are concerned and trying to figure out ways to stop this.